diff --git a/backend/app/controllers/admin/clubs_controller.rb b/backend/app/controllers/admin/clubs_controller.rb
index 775c8da..b39e06d 100644
--- a/backend/app/controllers/admin/clubs_controller.rb
+++ b/backend/app/controllers/admin/clubs_controller.rb
@@ -12,6 +12,7 @@ module Admin
       @plans = Plan.ordered.reject { |p| p.slug == "free" }
       @teams = @club.teams.order(:name)
       @quote = @club.active_billing_quote
+      @concurrency_violations = StreamConcurrencyViolation.for_club(@club.id).recent.limit(20)
     end
 
     def grant_comped
diff --git a/backend/app/controllers/admin/dashboard_controller.rb b/backend/app/controllers/admin/dashboard_controller.rb
index f23f76c..95d43cf 100644
--- a/backend/app/controllers/admin/dashboard_controller.rb
+++ b/backend/app/controllers/admin/dashboard_controller.rb
@@ -8,6 +8,8 @@ module Admin
         .includes(:stream_node, match: :team)
         .order(started_at: :desc)
       @teams = Team.includes(:matches).order(:name).limit(8)
+      @recent_concurrency_violations = StreamConcurrencyViolation.recent.limit(8)
+      @concurrency_violation_lookback = StreamConcurrencyViolation.lookback.count
     end
 
     def metrics
diff --git a/backend/app/controllers/admin/sessions_controller.rb b/backend/app/controllers/admin/sessions_controller.rb
index 3ed3c89..b2cfecd 100644
--- a/backend/app/controllers/admin/sessions_controller.rb
+++ b/backend/app/controllers/admin/sessions_controller.rb
@@ -18,6 +18,7 @@ module Admin
         .find(params[:id])
       @events = @session.stream_events.recent.limit(100)
       @club = @session.match.team.club
+      @concurrency_violations = StreamConcurrencyViolation.for_session(@session.id).recent.limit(20)
     end
 
     def stop
diff --git a/backend/app/controllers/admin/stream_concurrency_violations_controller.rb b/backend/app/controllers/admin/stream_concurrency_violations_controller.rb
new file mode 100644
index 0000000..02832f0
--- /dev/null
+++ b/backend/app/controllers/admin/stream_concurrency_violations_controller.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+module Admin
+  class StreamConcurrencyViolationsController < Admin::BaseController
+    def index
+      @filters = {
+        q: params[:q].to_s.strip.presence,
+        devices_differ: params[:devices_differ].to_s == "1"
+      }
+      scope = StreamConcurrencyViolation.recent
+      if @filters[:q]
+        term = "%#{ActiveRecord::Base.sanitize_sql_like(@filters[:q])}%"
+        scope = scope.where(
+          "user_email ILIKE :term OR user_name ILIKE :term OR occupying_club_name ILIKE :term OR attempted_club_name ILIKE :term OR occupying_match_label ILIKE :term OR attempted_match_label ILIKE :term",
+          term: term
+        )
+      end
+      scope = scope.two_devices if @filters[:devices_differ]
+      @total_count = scope.count
+      @violations = scope.limit(200)
+      @lookback_count = StreamConcurrencyViolation.lookback.count
+      @two_devices_count = StreamConcurrencyViolation.lookback.two_devices.count
+    end
+  end
+end
diff --git a/backend/app/helpers/admin_helper.rb b/backend/app/helpers/admin_helper.rb
index a260730..5af30f2 100644
--- a/backend/app/helpers/admin_helper.rb
+++ b/backend/app/helpers/admin_helper.rb
@@ -188,4 +188,8 @@ module AdminHelper
     labels = item.selected_channels.map { |key| I18n.t("admin.announcements.channels.#{key}") }
     labels.presence&.join(" · ") || I18n.t("admin.common.dash")
   end
+
+  def admin_concurrency_violation_lookback_count
+    @admin_concurrency_violation_lookback_count ||= StreamConcurrencyViolation.lookback.count
+  end
 end
diff --git a/backend/app/models/stream_concurrency_violation.rb b/backend/app/models/stream_concurrency_violation.rb
new file mode 100644
index 0000000..75fcb6a
--- /dev/null
+++ b/backend/app/models/stream_concurrency_violation.rb
@@ -0,0 +1,71 @@
+# frozen_string_literal: true
+
+class StreamConcurrencyViolation < ApplicationRecord
+  LOOKBACK = 30.days
+
+  belongs_to :user, optional: true
+  belongs_to :occupying_session, class_name: "StreamSession", optional: true
+  belongs_to :attempted_session, class_name: "StreamSession", optional: true
+  belongs_to :occupying_club, class_name: "Club", optional: true
+  belongs_to :attempted_club, class_name: "Club", optional: true
+
+  validates :user_email, :occupying_match_label, :attempted_match_label, presence: true
+  validates :attempt_action, inclusion: { in: %w[start resume] }
+
+  scope :recent, -> { order(created_at: :desc) }
+  scope :since, ->(time) { where("created_at >= ?", time) }
+  scope :lookback, -> { since(LOOKBACK.ago) }
+  scope :two_devices, -> { where(devices_differ: true) }
+  scope :for_club, lambda { |club_id|
+    where("occupying_club_id = :id OR attempted_club_id = :id", id: club_id)
+  }
+  scope :for_session, lambda { |session_id|
+    where("occupying_session_id = :id OR attempted_session_id = :id", id: session_id)
+  }
+
+  def self.record!(attempted:, occupying:, action: "start")
+    user = attempted.user || occupying.user
+    occupying_club = occupying.match&.team&.club
+    attempted_club = attempted.match&.team&.club
+    occupying_device = occupying.client_device_label
+    attempted_device = attempted.client_device_label
+
+    create!(
+      user: user,
+      occupying_session: occupying,
+      attempted_session: attempted,
+      occupying_club: occupying_club,
+      attempted_club: attempted_club,
+      attempt_action: action.to_s,
+      user_email: user&.email.presence || "unknown",
+      user_name: user&.name,
+      occupying_club_name: occupying_club&.name,
+      attempted_club_name: attempted_club&.name,
+      occupying_match_label: occupying.match_label,
+      attempted_match_label: attempted.match_label,
+      occupying_status: occupying.status,
+      occupying_device: occupying_device,
+      attempted_device: attempted_device,
+      devices_differ: StreamSession.devices_differ?(occupying, attempted),
+      metadata: {
+        occupying_session_id: occupying.id,
+        attempted_session_id: attempted.id,
+        occupying_client_os: occupying.client_os,
+        attempted_client_os: attempted.client_os,
+        occupying_app_version: occupying.app_version,
+        attempted_app_version: attempted.app_version
+      }.compact
+    )
+  rescue StandardError => e
+    Rails.logger.error("[StreamConcurrencyViolation] record failed: #{e.class} #{e.message}")
+    nil
+  end
+
+  def club_name
+    attempted_club_name.presence || occupying_club_name
+  end
+
+  def operator_label
+    [user_name.presence, user_email].compact.join(" · ")
+  end
+end
diff --git a/backend/app/models/stream_session.rb b/backend/app/models/stream_session.rb
index 1181dcc..ebb7cd2 100644
--- a/backend/app/models/stream_session.rb
+++ b/backend/app/models/stream_session.rb
@@ -10,6 +10,10 @@ class StreamSession < ApplicationRecord
   belongs_to :user
   belongs_to :stream_node, optional: true
   has_many :stream_events, dependent: :destroy
+  has_many :occupying_concurrency_violations, class_name: "StreamConcurrencyViolation",
+           foreign_key: :occupying_session_id, dependent: :nullify, inverse_of: :occupying_session
+  has_many :attempted_concurrency_violations, class_name: "StreamConcurrencyViolation",
+           foreign_key: :attempted_session_id, dependent: :nullify, inverse_of: :attempted_session
   has_one :score_state, dependent: :destroy
   has_one :recording
   has_many :device_states, dependent: :destroy
@@ -84,6 +88,35 @@ class StreamSession < ApplicationRecord
     stream_node&.role.presence || ingest_role
   end
 
+  def match_label
+    team_name = match&.team&.name
+    opponent = match&.opponent_name
+    return id.to_s if team_name.blank?
+
+    opponent.present? ? "#{team_name} vs #{opponent}" : team_name
+  end
+
+  def client_device_label
+    parts = []
+    parts << client_os if client_os.present?
+    device = [device_manufacturer, device_model].compact_blank.join(" ")
+    parts << device if device.present?
+    parts << "OS #{os_version}" if os_version.present?
+    parts.join(" · ").presence
+  end
+
+  def client_device_key
+    [client_os, device_manufacturer, device_model].map { |v| v.to_s.strip.downcase }.join("|")
+  end
+
+  def self.devices_differ?(left, right)
+    ka = left.client_device_key
+    kb = right.client_device_key
+    return false if ka.delete("|").blank? || kb.delete("|").blank?
+
+    ka != kb
+  end
+
   def rtmp_ingest_url
     # RootEncoder richiede rtmp://host:port/app/stream (due segmenti).
     # MediaMTX path = live/match_{uuid} (no ?token= nel path).
diff --git a/backend/app/models/user.rb b/backend/app/models/user.rb
index bb3adc6..5979013 100644
--- a/backend/app/models/user.rb
+++ b/backend/app/models/user.rb
@@ -11,6 +11,7 @@ class User < ApplicationRecord
   has_many :clubs, through: :club_memberships
   has_many :owned_clubs, -> { where(club_memberships: { role: "owner" }) }, through: :club_memberships, source: :club
   has_many :stream_sessions, dependent: :nullify
+  has_many :stream_concurrency_violations, dependent: :nullify
 
   def manageable_teams
     staff_ids = teams.select(:id)
diff --git a/backend/app/services/sessions/assert_user_concurrent.rb b/backend/app/services/sessions/assert_user_concurrent.rb
new file mode 100644
index 0000000..cccb0b3
--- /dev/null
+++ b/backend/app/services/sessions/assert_user_concurrent.rb
@@ -0,0 +1,51 @@
+# frozen_string_literal: true
+
+module Sessions
+  class AssertUserConcurrent
+    ERROR_CODE = "user_concurrent_stream"
+
+    def self.with_lock(session, action: "start")
+      new(session, action: action).with_lock { yield }
+    end
+
+    def initialize(session, action: "start")
+      @session = session
+      @action = action.to_s
+    end
+
+    def with_lock
+      occupying = nil
+
+      User.transaction do
+        User.lock.find(@session.user_id) if @session.user_id.present?
+        occupying = occupying_session
+        yield if occupying.nil?
+      end
+
+      return if occupying.nil?
+
+      StreamConcurrencyViolation.record!(
+        attempted: @session,
+        occupying: occupying,
+        action: @action
+      )
+      raise Teams::EntitlementError.new(
+        I18n.t("api.errors.user_concurrent_stream"),
+        code: ERROR_CODE
+      )
+    end
+
+    private
+
+    def occupying_session
+      return if @session.user_id.blank?
+
+      StreamSession.broadcasting
+                   .where(user_id: @session.user_id)
+                   .where.not(id: @session.id)
+                   .includes(:user, match: { team: :club })
+                   .order(Arel.sql("COALESCE(started_at, updated_at) DESC"))
+                   .first
+    end
+  end
+end
diff --git a/backend/app/services/sessions/resume.rb b/backend/app/services/sessions/resume.rb
index 2da9fee..26d0661 100644
--- a/backend/app/services/sessions/resume.rb
+++ b/backend/app/services/sessions/resume.rb
@@ -10,8 +10,10 @@ module Sessions
       end
 
       cancel_timeout_job
-      # connecting finché RTMP non è online (evita lose_connection da PublisherSync)
-      @session.begin_connect! if @session.may_begin_connect?
+      Sessions::AssertUserConcurrent.with_lock(@session, action: "resume") do
+        # connecting finché RTMP non è online (evita lose_connection da PublisherSync)
+        @session.begin_connect! if @session.may_begin_connect?
+      end
       # Recording riabilitato in PublisherSync quando RTMP è online (evita patch path prima del publisher).
       log_event("resumed")
       SessionChannel.broadcast_message(@session, { type: "command", action: "resume_stream" })
diff --git a/backend/app/services/sessions/start.rb b/backend/app/services/sessions/start.rb
index 583a5e5..36011ac 100644
--- a/backend/app/services/sessions/start.rb
+++ b/backend/app/services/sessions/start.rb
@@ -5,9 +5,11 @@ module Sessions
     end
 
     def call
-      @session.match.team.entitlements.assert_concurrent_stream!(excluding_session: @session)
-      @session.begin_connect! if @session.may_begin_connect?
-      @session.update!(status: "connecting") unless @session.connecting?
+      Sessions::AssertUserConcurrent.with_lock(@session, action: "start") do
+        @session.match.team.entitlements.assert_concurrent_stream!(excluding_session: @session)
+        @session.begin_connect! if @session.may_begin_connect?
+        @session.update!(status: "connecting") unless @session.connecting?
+      end
       Youtube::LivePipeline.schedule!(@session, force: true) if @session.platform == "youtube"
       broadcast_status("connecting")
       @session
diff --git a/backend/app/views/admin/clubs/show.html.erb b/backend/app/views/admin/clubs/show.html.erb
index 12eda8c..d048d8e 100644
--- a/backend/app/views/admin/clubs/show.html.erb
+++ b/backend/app/views/admin/clubs/show.html.erb
@@ -46,3 +46,14 @@
     </tbody>
   </table>
 <% end %>
+
+<h3 style="font-size:1rem;margin-top:28px"><%= t("admin.clubs.show.concurrency_title") %></h3>
+<p class="muted"><%= t("admin.clubs.show.concurrency_lead") %></p>
+<%= render "admin/stream_concurrency_violations/table",
+      violations: @concurrency_violations,
+      empty_key: "admin.clubs.show.concurrency_none" %>
+<% if @concurrency_violations.any? %>
+  <p class="kpi-sub" style="margin-top:0.75rem">
+    <%= link_to t("admin.clubs.show.concurrency_all"), admin_stream_concurrency_violations_path(q: @club.name) %>
+  </p>
+<% end %>
diff --git a/backend/app/views/admin/dashboard/index.html.erb b/backend/app/views/admin/dashboard/index.html.erb
index 0bd4412..895ca50 100644
--- a/backend/app/views/admin/dashboard/index.html.erb
+++ b/backend/app/views/admin/dashboard/index.html.erb
@@ -67,6 +67,24 @@
   <% end %>
 </section>
 
+<section class="panel" style="margin-bottom:1.25rem">
+  <h2><%= t("admin.dashboard.concurrency_panel.title") %></h2>
+  <% if @concurrency_violation_lookback.positive? %>
+    <p class="kpi-sub" style="margin-bottom:0.75rem">
+      <%= t("admin.dashboard.concurrency_panel.count", count: @concurrency_violation_lookback) %>
+      — <%= link_to t("admin.dashboard.concurrency_panel.view_all"), admin_stream_concurrency_violations_path %>
+    </p>
+    <%= render "admin/stream_concurrency_violations/table",
+          violations: @recent_concurrency_violations,
+          empty_key: "admin.dashboard.concurrency_panel.none" %>
+  <% else %>
+    <p class="empty" style="margin:0">
+      <%= t("admin.dashboard.concurrency_panel.none_html",
+            link: link_to(t("admin.dashboard.concurrency_panel.view_all"), admin_stream_concurrency_violations_path)) %>
+    </p>
+  <% end %>
+</section>
+
 <section class="charts-grid" style="grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));">
   <div class="chart-card">
     <h3><%= t("admin.dashboard.disk.system_title") %></h3>
diff --git a/backend/app/views/admin/sessions/show.html.erb b/backend/app/views/admin/sessions/show.html.erb
index 70eedfa..10d9f54 100644
--- a/backend/app/views/admin/sessions/show.html.erb
+++ b/backend/app/views/admin/sessions/show.html.erb
@@ -258,6 +258,16 @@
   </section>
 <% end %>
 
+<% if @concurrency_violations.any? %>
+  <section class="panel">
+    <h3><%= t("admin.sessions.show.concurrency_title") %></h3>
+    <p class="muted"><%= t("admin.sessions.show.concurrency_lead") %></p>
+    <%= render "admin/stream_concurrency_violations/table",
+          violations: @concurrency_violations,
+          empty_key: "admin.sessions.show.concurrency_none" %>
+  </section>
+<% end %>
+
 <section class="panel">
   <h3><%= t("admin.sessions.show.events_title") %></h3>
   <% if @events.any? %>
diff --git a/backend/app/views/admin/stream_concurrency_violations/_table.html.erb b/backend/app/views/admin/stream_concurrency_violations/_table.html.erb
new file mode 100644
index 0000000..47813a6
--- /dev/null
+++ b/backend/app/views/admin/stream_concurrency_violations/_table.html.erb
@@ -0,0 +1,67 @@
+<% if violations.any? %>
+  <div class="admin-table-wrap">
+    <table class="admin-table">
+      <thead>
+        <tr>
+          <th><%= t("admin.stream_concurrency.table.when") %></th>
+          <th><%= t("admin.stream_concurrency.table.account") %></th>
+          <th><%= t("admin.stream_concurrency.table.club") %></th>
+          <th><%= t("admin.stream_concurrency.table.occupying") %></th>
+          <th><%= t("admin.stream_concurrency.table.attempted") %></th>
+          <th></th>
+        </tr>
+      </thead>
+      <tbody>
+        <% violations.each do |row| %>
+          <tr class="<%= 'admin-row--two-devices' if row.devices_differ? %>">
+            <td class="muted"><%= admin_datetime(row.created_at, with_seconds: true) %></td>
+            <td>
+              <strong><%= row.user_name.presence || t("admin.common.dash") %></strong>
+              <div class="muted" style="font-size:0.85rem"><%= row.user_email %></div>
+            </td>
+            <td>
+              <% if row.attempted_club %>
+                <%= link_to row.club_name, admin_club_path(row.attempted_club) %>
+              <% elsif row.occupying_club %>
+                <%= link_to row.club_name, admin_club_path(row.occupying_club) %>
+              <% else %>
+                <%= row.club_name.presence || t("admin.common.dash") %>
+              <% end %>
+            </td>
+            <td>
+              <% if row.occupying_session %>
+                <%= link_to row.occupying_match_label, admin_session_path(row.occupying_session) %>
+              <% else %>
+                <%= row.occupying_match_label %>
+              <% end %>
+              <div class="muted" style="font-size:0.85rem;margin-top:0.2rem">
+                <span class="badge <%= admin_session_status_badge_class(row.occupying_status) %>"><%= row.occupying_status %></span>
+                <%= row.occupying_device.presence || t("admin.common.dash") %>
+              </div>
+            </td>
+            <td>
+              <% if row.attempted_session %>
+                <%= link_to row.attempted_match_label, admin_session_path(row.attempted_session) %>
+              <% else %>
+                <%= row.attempted_match_label %>
+              <% end %>
+              <div class="muted" style="font-size:0.85rem;margin-top:0.2rem">
+                <%= t("admin.stream_concurrency.action.#{row.attempt_action}") %>
+                · <%= row.attempted_device.presence || t("admin.common.dash") %>
+              </div>
+            </td>
+            <td>
+              <% if row.devices_differ? %>
+                <span class="badge badge--abuse"><%= t("admin.stream_concurrency.badge.two_devices") %></span>
+              <% else %>
+                <span class="muted"><%= t("admin.stream_concurrency.badge.same_or_unknown") %></span>
+              <% end %>
+            </td>
+          </tr>
+        <% end %>
+      </tbody>
+    </table>
+  </div>
+<% else %>
+  <p class="empty"><%= t(empty_key) %></p>
+<% end %>
diff --git a/backend/app/views/admin/stream_concurrency_violations/index.html.erb b/backend/app/views/admin/stream_concurrency_violations/index.html.erb
new file mode 100644
index 0000000..6acade3
--- /dev/null
+++ b/backend/app/views/admin/stream_concurrency_violations/index.html.erb
@@ -0,0 +1,48 @@
+<% content_for :body_class, "admin-body" %>
+
+<div class="admin-page-head">
+  <h2 class="admin-page-title"><%= t("admin.stream_concurrency.index.title") %></h2>
+  <p class="muted admin-page-sub"><%= t("admin.stream_concurrency.index.lead") %></p>
+</div>
+
+<section class="kpi-grid">
+  <div class="kpi-card <%= @lookback_count.positive? ? 'kpi-card--accent' : '' %>">
+    <div class="kpi-label"><%= t("admin.stream_concurrency.kpi.lookback") %></div>
+    <div class="kpi-value"><%= @lookback_count %></div>
+    <div class="kpi-sub"><%= t("admin.stream_concurrency.kpi.lookback_sub") %></div>
+  </div>
+  <div class="kpi-card <%= @two_devices_count.positive? ? 'kpi-card--danger' : '' %>">
+    <div class="kpi-label"><%= t("admin.stream_concurrency.kpi.two_devices") %></div>
+    <div class="kpi-value"><%= @two_devices_count %></div>
+    <div class="kpi-sub"><%= t("admin.stream_concurrency.kpi.two_devices_sub") %></div>
+  </div>
+</section>
+
+<div class="panel admin-sessions-filters">
+  <%= form_with url: admin_stream_concurrency_violations_path, method: :get, local: true, class: "admin-filter-form" do %>
+    <div class="admin-filter-grid">
+      <label class="admin-filter-field">
+        <span><%= t("admin.stream_concurrency.filters.q") %></span>
+        <%= text_field_tag :q, @filters[:q], placeholder: t("admin.stream_concurrency.filters.q_placeholder") %>
+      </label>
+      <label class="admin-filter-field admin-filter-field--check">
+        <span><%= t("admin.stream_concurrency.filters.two_devices") %></span>
+        <label class="admin-checkbox">
+          <%= check_box_tag :devices_differ, "1", @filters[:devices_differ] %>
+          <%= t("admin.stream_concurrency.filters.two_devices_hint") %>
+        </label>
+      </label>
+    </div>
+    <div class="admin-filter-actions">
+      <%= submit_tag t("admin.stream_concurrency.filters.apply"), class: "admin-btn admin-btn--primary admin-btn--sm" %>
+      <%= link_to t("admin.stream_concurrency.filters.reset"), admin_stream_concurrency_violations_path, class: "admin-btn admin-btn--outline admin-btn--sm" %>
+      <span class="muted admin-filter-count">
+        <%= t("admin.stream_concurrency.index.results", shown: @violations.size, total: @total_count) %>
+      </span>
+    </div>
+  <% end %>
+</div>
+
+<div class="panel">
+  <%= render "admin/stream_concurrency_violations/table", violations: @violations, empty_key: "admin.stream_concurrency.index.none" %>
+</div>
diff --git a/backend/app/views/layouts/admin.html.erb b/backend/app/views/layouts/admin.html.erb
index fc618e0..6b1b729 100644
--- a/backend/app/views/layouts/admin.html.erb
+++ b/backend/app/views/layouts/admin.html.erb
@@ -5,7 +5,7 @@
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <meta name="robots" content="noindex, nofollow">
   <%= csrf_meta_tags %>
-  <link rel="stylesheet" href="/admin.css?v=15">
+  <link rel="stylesheet" href="/admin.css?v=16">
   <%= yield :head %>
   <% if content_for?(:replay_archive_styles) %>
     <link rel="stylesheet" href="/marketing.css?v=42">
@@ -32,6 +32,10 @@
         <%= link_to t("admin.layout.nav.billing"), admin_billing_path, class: ("active" if controller_name.in?(%w[billing billing_invoices])) %>
         <%= link_to t("admin.layout.nav.youtube"), admin_youtube_platform_path, class: ("active" if controller_name == "youtube") %>
         <%= link_to t("admin.layout.nav.sessions"), admin_sessions_path, class: ("active" if controller_name == "sessions") %>
+        <% abuse_count = admin_concurrency_violation_lookback_count %>
+        <%= link_to admin_stream_concurrency_violations_path, class: ("active" if controller_name == "stream_concurrency_violations") do %>
+          <%= t("admin.layout.nav.stream_concurrency") %><% if abuse_count.positive? %> <span class="admin-nav-badge"><%= abuse_count %></span><% end %>
+        <% end %>
         <%= link_to t("admin.layout.nav.analytics"), admin_analytics_path, class: ("active" if controller_name == "analytics") %>
         <%= link_to t("admin.layout.nav.costs"), admin_costs_path, class: ("active" if controller_name.in?(%w[costs cost_entries])) %>
         <%= link_to t("admin.layout.nav.stream_nodes"), admin_stream_nodes_path, class: ("active" if controller_name == "stream_nodes") %>
diff --git a/backend/app/views/layouts/marketing.html.erb b/backend/app/views/layouts/marketing.html.erb
index c2ec624..c417a68 100644
--- a/backend/app/views/layouts/marketing.html.erb
+++ b/backend/app/views/layouts/marketing.html.erb
@@ -10,7 +10,7 @@
     <%= render "shared/analytics_suppress" %>
     <%= yield :head %>
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.min.css" integrity="sha512-SnH5WK+bZxgPHs44uWIX+LLJAJ9/2PkPKZ5QiAj6Ta86w+fsb2TkcmfRyVX3pBnMFcV7oQPJkl9QevSCWr3W6A==" crossorigin="anonymous" referrerpolicy="no-referrer">
-    <link rel="stylesheet" href="/marketing.css?v=79">
+    <link rel="stylesheet" href="/marketing.css?v=81">
   </head>
   <body data-confirm-i18n='<%= raw confirm_dialog_i18n_json %>'<% if MatchLiveTv.google_analytics_configured? %> data-ga-id="<%= MatchLiveTv.google_analytics_measurement_id %>"<% end %>>
     <%= render "shared/cookie_banner" %>
diff --git a/backend/app/views/layouts/marketing_live.html.erb b/backend/app/views/layouts/marketing_live.html.erb
index c56588c..dc259fe 100644
--- a/backend/app/views/layouts/marketing_live.html.erb
+++ b/backend/app/views/layouts/marketing_live.html.erb
@@ -8,7 +8,7 @@
     <%= render "shared/meta_tags" %>
     <%= render "shared/analytics_suppress" %>
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.min.css" integrity="sha512-SnH5WK+bZxgPHs44uWIX+LLJAJ9/2PkPKZ5QiAj6Ta86w+fsb2TkcmfRyVX3pBnMFcV7oQPJkl9QevSCWr3W6A==" crossorigin="anonymous" referrerpolicy="no-referrer">
-    <link rel="stylesheet" href="/marketing.css?v=79">
+    <link rel="stylesheet" href="/marketing.css?v=81">
     <link rel="stylesheet" href="/live.css?v=26">
     <%= yield :head %>
   </head>
diff --git a/backend/app/views/public/live/index.html.erb b/backend/app/views/public/live/index.html.erb
index e6ff744..dea1b8d 100644
--- a/backend/app/views/public/live/index.html.erb
+++ b/backend/app/views/public/live/index.html.erb
@@ -164,8 +164,8 @@
         <aside class="demo-live-card" aria-label="<%= t("live.index.demo_aria_label") %>">
           <p class="demo-label"><%= t("live.index.demo_label") %></p>
           <article class="live-card live-card--demo">
-            <h3>Tigers Volley vs ASD Eagles</h3>
-            <p class="meta"><%= t("live.index.demo_meta") %></p>
+            <h3><%= MatchLiveTv::Demo.match_title %></h3>
+            <p class="meta"><%= MatchLiveTv::Demo.live_meta %></p>
             <p class="card-score">
               <span class="card-sets"><%= t("live.index.demo_sets") %></span>
               <span class="card-points">18 - 16</span>
diff --git a/backend/app/views/public/pages/faq.html.erb b/backend/app/views/public/pages/faq.html.erb
index 0a22057..1d0c9d8 100644
--- a/backend/app/views/public/pages/faq.html.erb
+++ b/backend/app/views/public/pages/faq.html.erb
@@ -80,6 +80,13 @@
         ) %>
       </p>
     </details>
+
+    <details class="faq-item">
+      <summary><%= t("pages.faq.q10_question") %></summary>
+      <p>
+        <%= t("pages.faq.q10_answer") %>
+      </p>
+    </details>
   </div>
   <script>
     (function () {
diff --git a/backend/app/views/public/pages/features.html.erb b/backend/app/views/public/pages/features.html.erb
index ba4ea40..46d50cf 100644
--- a/backend/app/views/public/pages/features.html.erb
+++ b/backend/app/views/public/pages/features.html.erb
@@ -187,7 +187,7 @@
           <div class="features-yt-mock__meta">
             <span class="features-yt-mock__avatar"><i class="fa-solid fa-shield-halved"></i></span>
             <div class="features-yt-mock__text">
-              <strong><%= t("pages.features.youtube_mock_channel") %></strong>
+              <strong><%= MatchLiveTv::Demo.home_team %></strong>
               <span><%= t("pages.features.youtube_mock_subs") %></span>
             </div>
           </div>
@@ -196,6 +196,8 @@
     </div>
   </section>
 
+  <%= render "shared/sponsor_cover_promo" %>
+
   <section class="section wrap features-replay" aria-labelledby="features-replay-title">
     <div class="features-split features-split--reverse">
       <div class="features-split__copy">
@@ -218,7 +220,7 @@
               <li>
                 <span class="features-archive-mock__thumb features-archive-mock__thumb--a"></span>
                 <span class="features-archive-mock__info">
-                  <strong><%= t("pages.features.replay_mock_1_title") %></strong>
+                  <strong><%= MatchLiveTv::Demo.match_title %></strong>
                   <em><%= t("pages.features.replay_mock_1_meta") %></em>
                 </span>
                 <i class="fa-solid fa-download" aria-hidden="true"></i>
@@ -226,7 +228,7 @@
               <li>
                 <span class="features-archive-mock__thumb features-archive-mock__thumb--b"></span>
                 <span class="features-archive-mock__info">
-                  <strong><%= t("pages.features.replay_mock_2_title") %></strong>
+                  <strong><%= MatchLiveTv::Demo.match_title %></strong>
                   <em><%= t("pages.features.replay_mock_2_meta") %></em>
                 </span>
                 <i class="fa-solid fa-download" aria-hidden="true"></i>
@@ -234,7 +236,7 @@
               <li>
                 <span class="features-archive-mock__thumb features-archive-mock__thumb--c"></span>
                 <span class="features-archive-mock__info">
-                  <strong><%= t("pages.features.replay_mock_3_title") %></strong>
+                  <strong><%= MatchLiveTv::Demo.match_title %></strong>
                   <em><%= t("pages.features.replay_mock_3_meta") %></em>
                 </span>
                 <i class="fa-solid fa-download" aria-hidden="true"></i>
diff --git a/backend/app/views/public/pages/home.html.erb b/backend/app/views/public/pages/home.html.erb
index 418ea51..26ce05c 100644
--- a/backend/app/views/public/pages/home.html.erb
+++ b/backend/app/views/public/pages/home.html.erb
@@ -94,6 +94,8 @@
   </div>
 </section>
 
+<%= render "shared/sponsor_cover_promo", variant: :compact %>
+
 <section class="section wrap plans-teaser">
   <h2><%= t("home.plans_title") %></h2>
   <p class="plans-teaser-lead"><%= t("home.plans_lead") %></p>
diff --git a/backend/app/views/public/pages/pricing.html.erb b/backend/app/views/public/pages/pricing.html.erb
index 3b850cb..7061841 100644
--- a/backend/app/views/public/pages/pricing.html.erb
+++ b/backend/app/views/public/pages/pricing.html.erb
@@ -22,6 +22,8 @@
 
   <%= render "shared/plan_cards" %>
 
+  <%= render "shared/sponsor_cover_promo", variant: :compact, show_cta: false, nested: true %>
+
   <div class="table-scroll compare-table-wrap">
     <table class="compare-table">
       <colgroup>
@@ -50,6 +52,12 @@
         <tr><td><%= t("pages.pricing.table_youtube") %></td><td><%= t("pages.pricing.table_no") %></td><td>Match Live TV</td><td><%= t("pages.pricing.table_youtube_club") %></td></tr>
         <tr><td><%= t("pages.pricing.table_replay") %></td><td><%= t("pages.pricing.table_no") %></td><td><%= t("pages.plans.replay_days", count: 30) %></td><td><%= t("pages.plans.replay_days", count: 90) %></td></tr>
         <tr><td><%= t("pages.pricing.table_download") %></td><td><%= t("pages.pricing.table_no") %></td><td><%= t("pages.pricing.table_yes") %></td><td><%= t("pages.pricing.table_yes") %></td></tr>
+        <tr>
+          <td><%= t("pages.pricing.table_cover_sponsor") %></td>
+          <td><%= t("pages.pricing.table_no") %></td>
+          <td><%= t("pages.pricing.table_no") %></td>
+          <td><%= t("pages.pricing.table_yes") %></td>
+        </tr>
         <tr>
           <td><%= t("pages.pricing.table_price") %></td>
           <td><%= t("pages.pricing.table_price_free") %></td>
diff --git a/backend/app/views/shared/_plan_cards.html.erb b/backend/app/views/shared/_plan_cards.html.erb
index 3ad18cf..fa668b9 100644
--- a/backend/app/views/shared/_plan_cards.html.erb
+++ b/backend/app/views/shared/_plan_cards.html.erb
@@ -65,6 +65,9 @@
                    t("pages.plans.youtube_none")
                  end
         ) %></li>
+        <% if plan.slug == "premium_full" %>
+          <li><%= raw t("pages.plans.cover_sponsor_html") %></li>
+        <% end %>
       </ul>
       <% if plan.slug == "premium_full" %>
         <p class="plan-staff-note"><%= t("pages.plans.staff_note_full") %></p>
diff --git a/backend/app/views/shared/_sponsor_cover_mock.html.erb b/backend/app/views/shared/_sponsor_cover_mock.html.erb
new file mode 100644
index 0000000..0318606
--- /dev/null
+++ b/backend/app/views/shared/_sponsor_cover_mock.html.erb
@@ -0,0 +1,26 @@
+<figure class="cover-mock" aria-hidden="true" inert>
+  <div class="cover-mock__chrome">
+    <span class="cover-mock__brand">MATCH <em>LIVE</em> TV</span>
+    <span class="cover-mock__state"><%= t("pages.sponsor_cover.mock.state") %></span>
+  </div>
+  <div class="cover-mock__stage">
+    <p class="cover-mock__cat"><%= MatchLiveTv::Demo.category %></p>
+    <p class="cover-mock__home"><%= MatchLiveTv::Demo.home_team %></p>
+    <p class="cover-mock__vs">vs</p>
+    <p class="cover-mock__away"><%= MatchLiveTv::Demo.away_team %></p>
+    <p class="cover-mock__when"><%= MatchLiveTv::Demo.when_label %></p>
+    <p class="cover-mock__art-label"><%= t("pages.sponsor_cover.mock.art_label") %></p>
+    <div class="cover-mock__art">
+      <div class="cover-mock__crest">
+        <span class="cover-mock__crest-mark">M</span>
+        <span class="cover-mock__crest-name"><%= MatchLiveTv::Demo.home_team %></span>
+      </div>
+      <div class="cover-mock__marks">
+        <span class="cover-mock__mark cover-mock__mark--a"></span>
+        <span class="cover-mock__mark cover-mock__mark--b"></span>
+        <span class="cover-mock__mark cover-mock__mark--c"></span>
+      </div>
+    </div>
+    <p class="cover-mock__soon"><%= t("pages.sponsor_cover.mock.soon") %></p>
+  </div>
+</figure>
diff --git a/backend/app/views/shared/_sponsor_cover_promo.html.erb b/backend/app/views/shared/_sponsor_cover_promo.html.erb
new file mode 100644
index 0000000..af1ba1a
--- /dev/null
+++ b/backend/app/views/shared/_sponsor_cover_promo.html.erb
@@ -0,0 +1,30 @@
+<%# locals: (variant: :full, show_cta: nil, nested: false) %>
+<% variant = (local_assigns[:variant] || :full).to_sym %>
+<% compact = variant == :compact %>
+<% nested = local_assigns[:nested] %>
+<% show_cta = local_assigns.fetch(:show_cta, true) %>
+<% title_id = compact ? "sponsor-cover-title-compact" : "sponsor-cover-title" %>
+
+<section class="section<%= " wrap" unless nested %> sponsor-cover<%= " sponsor-cover--compact" if compact %>" aria-labelledby="<%= title_id %>">
+  <div class="sponsor-cover__panel">
+    <div class="sponsor-cover__copy">
+      <p class="feature-card__badge feature-card__badge--gold"><%= t("pages.sponsor_cover.eyebrow") %></p>
+      <h2 id="<%= title_id %>"><%= t("pages.sponsor_cover.title") %></h2>
+      <p class="sponsor-cover__lead"><%= t("pages.sponsor_cover.body") %></p>
+      <% unless compact %>
+        <ul class="features-checklist">
+          <li><%= t("pages.sponsor_cover.item_cover") %></li>
+          <li><%= t("pages.sponsor_cover.item_before") %></li>
+          <li><%= t("pages.sponsor_cover.item_club") %></li>
+        </ul>
+        <p class="sponsor-cover__claim"><%= t("pages.sponsor_cover.claim") %></p>
+      <% end %>
+      <% if show_cta %>
+        <%= link_to t("pages.sponsor_cover.cta"), public_prezzi_path, class: "btn btn-outline" %>
+      <% end %>
+    </div>
+    <div class="sponsor-cover__visual">
+      <%= render "shared/sponsor_cover_mock" %>
+    </div>
+  </div>
+</section>
diff --git a/backend/config/locales/admin.de.yml b/backend/config/locales/admin.de.yml
index 8010b44..b470b88 100644
--- a/backend/config/locales/admin.de.yml
+++ b/backend/config/locales/admin.de.yml
@@ -10,6 +10,7 @@ de:
         billing: Abrechnung
         youtube: YouTube
         sessions: Sitzungen
+        stream_concurrency: Konto-Missbrauch
         analytics: Analytics
         costs: Kosten
         stream_nodes: Stream-Knoten
@@ -103,6 +104,12 @@ de:
         warnings: "%{count} Warnung(en)"
         dashboard_link: Ops-Dashboard
         none_html: "Keine offenen Vorfälle. %{link}"
+      concurrency_panel:
+        title: Konto-Missbrauch (zweite Direktübertragung)
+        count: "%{count} Versuch(e) in den letzten 30 Tagen"
+        view_all: Alle ansehen
+        none: Keine Versuche erfasst.
+        none_html: "Keine Versuche einer zweiten Direktübertragung mit demselben Konto. %{link}"
       disk:
         system_title: Systemfestplatte
         free_label: "Frei: %{free} (%{percent}% belegt)"
@@ -193,6 +200,36 @@ de:
         table:
           resolved_at: Gelöst
         none: Kürzlich keine Vorfälle gelöst.
+    stream_concurrency:
+      index:
+        title: Konto-Missbrauch
+        lead: Versuche, mit demselben Konto eine zweite Direktübertragung zu starten, während bereits eine lief (connecting, live, reconnecting oder pausiert).
+        results: "%{shown} von %{total} angezeigt"
+        none: Keine Versuche erfasst.
+      kpi:
+        lookback: Letzte 30 Tage
+        lookback_sub: blockierte Versuche
+        two_devices: Zwei Geräte
+        two_devices_sub: unterschiedliche Handy-Modelle
+      filters:
+        q: Suche
+        q_placeholder: E-Mail, Verein, Spiel…
+        two_devices: Filter
+        two_devices_hint: Nur Versuche von unterschiedlichen Geräten
+        apply: Filtern
+        reset: Zurücksetzen
+      table:
+        when: Wann
+        account: Konto
+        club: Verein
+        occupying: Bereits laufende Direktübertragung
+        attempted: Blockierter Versuch
+      action:
+        start: Start
+        resume: Fortsetzen
+      badge:
+        two_devices: 2 Telefone
+        same_or_unknown: gleiches Gerät / n. v.
     clubs:
       index:
         title: Vereine & Teams
@@ -224,6 +261,10 @@ de:
           sport: Sportart
         matches_and_details: Spiele & Details
         replay: Replays
+        concurrency_title: Versuche einer zweiten Direktübertragung
+        concurrency_lead: Dasselbe Konto hat versucht, eine weitere Direktübertragung zu starten, während bereits eine lief.
+        concurrency_none: Keine Versuche für diesen Verein erfasst.
+        concurrency_all: Alle Konto-Missbräuche ansehen
     comped:
       title: Kostenloses Abonnement
       description: "Sponsor oder Aktion: Vergib Premium Light/Full ohne Stripe-Zahlung. Jederzeit widerrufbar."
@@ -296,6 +337,8 @@ de:
         devices_title: Geräte
         events_title: Ereignisse
         events_none: Keine Ereignisse erfasst.
+        concurrency_title: Versuche einer zweiten Direktübertragung
+        concurrency_lead: Dieses Konto hat versucht, eine weitere Direktübertragung zu starten, während diese bereits lief (oder wurde von einer anderen Sitzung desselben Kontos blockiert).
         status_label: "Status:"
         stop_button: Sitzung beenden
         stop_confirm: "Übertragung beenden? Der RTMP-Pfad wird entfernt und der Status wechselt zu beendet."
diff --git a/backend/config/locales/admin.en.yml b/backend/config/locales/admin.en.yml
index 7d0d67b..f29f9ef 100644
--- a/backend/config/locales/admin.en.yml
+++ b/backend/config/locales/admin.en.yml
@@ -10,6 +10,7 @@ en:
         billing: Billing
         youtube: YouTube
         sessions: Sessions
+        stream_concurrency: Account abuse
         analytics: Analytics
         costs: Costs
         stream_nodes: Stream nodes
@@ -103,6 +104,12 @@ en:
         warnings: "%{count} warning(s)"
         dashboard_link: Ops dashboard
         none_html: "No open incidents. %{link}"
+      concurrency_panel:
+        title: Account abuse (second live)
+        count: "%{count} attempt(s) in the last 30 days"
+        view_all: View all
+        none: No attempts recorded.
+        none_html: "No second-live attempts from the same account. %{link}"
       disk:
         system_title: System disk
         free_label: "Free: %{free} (%{percent}% used)"
@@ -193,6 +200,36 @@ en:
         table:
           resolved_at: Resolved
         none: No incidents resolved recently.
+    stream_concurrency:
+      index:
+        title: Account abuse
+        lead: Attempts to start a second live with the same account while another was already running (connecting, live, reconnecting or paused).
+        results: "Showing %{shown} of %{total}"
+        none: No attempts recorded.
+      kpi:
+        lookback: Last 30 days
+        lookback_sub: blocked attempts
+        two_devices: Two devices
+        two_devices_sub: different phone models
+      filters:
+        q: Search
+        q_placeholder: Email, club, match…
+        two_devices: Filter
+        two_devices_hint: Only attempts from different devices
+        apply: Filter
+        reset: Reset
+      table:
+        when: When
+        account: Account
+        club: Club
+        occupying: Live already running
+        attempted: Blocked attempt
+      action:
+        start: start
+        resume: resume
+      badge:
+        two_devices: 2 phones
+        same_or_unknown: same device / n.a.
     clubs:
       index:
         title: Clubs & teams
@@ -224,6 +261,10 @@ en:
           sport: Sport
         matches_and_details: Matches & details
         replay: Replays
+        concurrency_title: Second-live attempts
+        concurrency_lead: Same account tried to start another live while one was already running.
+        concurrency_none: No attempts recorded for this club.
+        concurrency_all: View all account abuse
     comped:
       title: Complimentary subscription
       description: "Sponsor or promotion: grant Premium Light/Full without a Stripe payment. Revocable at any time."
@@ -296,6 +337,8 @@ en:
         devices_title: Devices
         events_title: Events
         events_none: No events recorded.
+        concurrency_title: Second-live attempts
+        concurrency_lead: This account tried to start another live while this one was already running (or was blocked by another session of the same account).
         status_label: "Status:"
         stop_button: End session
         stop_confirm: "End the broadcast? The RTMP path will be removed and the status will move to ended."
diff --git a/backend/config/locales/admin.es.yml b/backend/config/locales/admin.es.yml
index 098099d..49c3ad7 100644
--- a/backend/config/locales/admin.es.yml
+++ b/backend/config/locales/admin.es.yml
@@ -10,6 +10,7 @@ es:
         billing: Facturación
         youtube: YouTube
         sessions: Sesiones
+        stream_concurrency: Abuso de cuenta
         analytics: Analytics
         costs: Costes
         stream_nodes: Nodos stream
@@ -103,6 +104,12 @@ es:
         warnings: "%{count} aviso(s)"
         dashboard_link: Panel de Ops
         none_html: "No hay incidencias abiertas. %{link}"
+      concurrency_panel:
+        title: Abuso de cuenta (segundo directo)
+        count: "%{count} intento(s) en los últimos 30 días"
+        view_all: Ver todos
+        none: No hay intentos registrados.
+        none_html: "Ningún intento de segundo directo con la misma cuenta. %{link}"
       disk:
         system_title: Disco del sistema
         free_label: "Libre: %{free} (%{percent}% usado)"
@@ -193,6 +200,36 @@ es:
         table:
           resolved_at: Resuelta
         none: No se han resuelto incidencias recientemente.
+    stream_concurrency:
+      index:
+        title: Abuso de cuenta
+        lead: Intentos de iniciar un segundo directo con la misma cuenta mientras ya había otro en curso (connecting, live, reconnecting o en pausa).
+        results: "Mostrando %{shown} de %{total}"
+        none: No hay intentos registrados.
+      kpi:
+        lookback: Últimos 30 días
+        lookback_sub: intentos bloqueados
+        two_devices: Dos dispositivos
+        two_devices_sub: modelos de teléfono distintos
+      filters:
+        q: Buscar
+        q_placeholder: Email, club, partido…
+        two_devices: Filtro
+        two_devices_hint: Solo intentos desde dispositivos distintos
+        apply: Filtrar
+        reset: Restablecer
+      table:
+        when: Cuándo
+        account: Cuenta
+        club: Club
+        occupying: Directo ya en curso
+        attempted: Intento bloqueado
+      action:
+        start: inicio
+        resume: reanudación
+      badge:
+        two_devices: 2 teléfonos
+        same_or_unknown: mismo dispositivo / n. d.
     clubs:
       index:
         title: Clubes y equipos
@@ -224,6 +261,10 @@ es:
           sport: Deporte
         matches_and_details: Partidos y detalles
         replay: Repeticiones
+        concurrency_title: Intentos de segundo directo
+        concurrency_lead: La misma cuenta intentó iniciar otro directo mientras ya había uno en curso.
+        concurrency_none: No hay intentos registrados para este club.
+        concurrency_all: Ver todos los abusos de cuenta
     comped:
       title: Suscripción de cortesía
       description: "Patrocinador o promoción: concede Premium Light/Full sin pago en Stripe. Revocable en cualquier momento."
@@ -296,6 +337,8 @@ es:
         devices_title: Dispositivos
         events_title: Eventos
         events_none: No hay eventos registrados.
+        concurrency_title: Intentos de segundo directo
+        concurrency_lead: Esta cuenta intentó iniciar otro directo mientras este ya estaba en curso (o fue bloqueada por otra sesión de la misma cuenta).
         status_label: "Estado:"
         stop_button: Finalizar sesión
         stop_confirm: "¿Finalizar la emisión? La ruta RTMP se eliminará y el estado pasará a finalizada."
diff --git a/backend/config/locales/admin.fr.yml b/backend/config/locales/admin.fr.yml
index a78f378..3ea30e8 100644
--- a/backend/config/locales/admin.fr.yml
+++ b/backend/config/locales/admin.fr.yml
@@ -10,6 +10,7 @@ fr:
         billing: Facturation
         youtube: YouTube
         sessions: Sessions
+        stream_concurrency: Abus de compte
         analytics: Analytics
         costs: Coûts
         stream_nodes: Nœuds stream
@@ -103,6 +104,12 @@ fr:
         warnings: "%{count} avertissement(s)"
         dashboard_link: Tableau de bord Ops
         none_html: "Aucun incident ouvert. %{link}"
+      concurrency_panel:
+        title: Abus de compte (deuxième direct)
+        count: "%{count} tentative(s) sur les 30 derniers jours"
+        view_all: Voir tout
+        none: Aucune tentative enregistrée.
+        none_html: "Aucune tentative de second direct avec le même compte. %{link}"
       disk:
         system_title: Disque système
         free_label: "Libre : %{free} (%{percent}% utilisé)"
@@ -193,6 +200,36 @@ fr:
         table:
           resolved_at: Résolu
         none: Aucun incident résolu récemment.
+    stream_concurrency:
+      index:
+        title: Abus de compte
+        lead: Tentatives de démarrer un second direct avec le même compte alors qu’un autre était déjà en cours (connecting, live, reconnecting ou en pause).
+        results: "%{shown} sur %{total} affichés"
+        none: Aucune tentative enregistrée.
+      kpi:
+        lookback: 30 derniers jours
+        lookback_sub: tentatives bloquées
+        two_devices: Deux appareils
+        two_devices_sub: modèles de téléphone différents
+      filters:
+        q: Rechercher
+        q_placeholder: E-mail, club, match…
+        two_devices: Filtre
+        two_devices_hint: Uniquement les tentatives depuis des appareils différents
+        apply: Filtrer
+        reset: Réinitialiser
+      table:
+        when: Quand
+        account: Compte
+        club: Club
+        occupying: Direct déjà en cours
+        attempted: Tentative bloquée
+      action:
+        start: démarrage
+        resume: reprise
+      badge:
+        two_devices: 2 téléphones
+        same_or_unknown: même appareil / n. d.
     clubs:
       index:
         title: Clubs et équipes
@@ -224,6 +261,10 @@ fr:
           sport: Sport
         matches_and_details: Matchs et détails
         replay: Replays
+        concurrency_title: Tentatives de second direct
+        concurrency_lead: Le même compte a tenté de démarrer un autre direct alors qu’un était déjà en cours.
+        concurrency_none: Aucune tentative enregistrée pour ce club.
+        concurrency_all: Voir tous les abus de compte
     comped:
       title: Abonnement offert
       description: "Sponsor ou promotion : accordez Premium Light/Full sans paiement Stripe. Révocable à tout moment."
@@ -296,6 +337,8 @@ fr:
         devices_title: Appareils
         events_title: Événements
         events_none: Aucun événement enregistré.
+        concurrency_title: Tentatives de second direct
+        concurrency_lead: Ce compte a tenté de démarrer un autre direct alors que celui-ci était déjà en cours (ou a été bloqué par une autre session du même compte).
         status_label: "Statut :"
         stop_button: Terminer la session
         stop_confirm: "Terminer la diffusion ? Le chemin RTMP sera supprimé et le statut passera à terminé."
diff --git a/backend/config/locales/admin.it.yml b/backend/config/locales/admin.it.yml
index 4cca580..3a37e52 100644
--- a/backend/config/locales/admin.it.yml
+++ b/backend/config/locales/admin.it.yml
@@ -10,6 +10,7 @@ it:
         billing: Fatturazione
         youtube: YouTube
         sessions: Sessioni
+        stream_concurrency: Abusi account
         analytics: Analytics
         costs: Costi
         stream_nodes: Nodi stream
@@ -107,6 +108,12 @@ it:
         warnings: "%{count} warning"
         dashboard_link: Dashboard Ops
         none_html: "Nessun incidente aperto. %{link}"
+      concurrency_panel:
+        title: Abusi account (seconda diretta)
+        count: "%{count} tentativo/i negli ultimi 30 giorni"
+        view_all: Vedi tutti
+        none: Nessun tentativo registrato.
+        none_html: "Nessun tentativo di seconda diretta dallo stesso account. %{link}"
       disk:
         system_title: Disco sistema
         free_label: "Libero: %{free} (%{percent}% usato)"
@@ -197,6 +204,36 @@ it:
         table:
           resolved_at: Risolto
         none: Nessun incidente risolto di recente.
+    stream_concurrency:
+      index:
+        title: Abusi account
+        lead: Tentativi di avviare una seconda diretta con lo stesso account mentre un’altra era già in corso (connecting, live, reconnecting o in pausa).
+        results: "Mostrate %{shown} di %{total}"
+        none: Nessun tentativo registrato.
+      kpi:
+        lookback: Ultimi 30 giorni
+        lookback_sub: tentativi bloccati
+        two_devices: Due dispositivi
+        two_devices_sub: modelli telefono diversi
+      filters:
+        q: Cerca
+        q_placeholder: Email, società, partita…
+        two_devices: Filtro
+        two_devices_hint: Solo tentativi da dispositivi diversi
+        apply: Filtra
+        reset: Reset
+      table:
+        when: Quando
+        account: Account
+        club: Società
+        occupying: Diretta già in corso
+        attempted: Tentativo bloccato
+      action:
+        start: avvio
+        resume: ripresa
+      badge:
+        two_devices: 2 telefoni
+        same_or_unknown: stesso device / n.d.
     clubs:
       index:
         title: Società e squadre
@@ -229,6 +266,10 @@ it:
           sport: Sport
         matches_and_details: Partite e dettagli
         replay: Replay
+        concurrency_title: Tentativi di seconda diretta
+        concurrency_lead: Stesso account che ha provato ad avviare un’altra diretta mentre ne era già in corso una.
+        concurrency_none: Nessun tentativo registrato per questa società.
+        concurrency_all: Vedi tutti gli abusi account
     comped:
       title: Abbonamento omaggio
       description: "Sponsor o promozione: assegna Premium Light/Full senza pagamento Stripe. Revocabile in qualsiasi momento."
@@ -317,6 +358,8 @@ it:
         devices_title: Dispositivi
         events_title: Eventi
         events_none: Nessun evento registrato.
+        concurrency_title: Tentativi di seconda diretta
+        concurrency_lead: Questo account ha provato ad avviare un’altra diretta mentre questa era già in corso (o è stato bloccato da un’altra sessione dello stesso account).
         status_label: "Stato:"
         stop_button: Termina sessione
         stop_confirm: "Terminare la trasmissione? Il path RTMP verrà rimosso e lo stato passerà a ended."
diff --git a/backend/config/locales/app.de.yml b/backend/config/locales/app.de.yml
index 8fd3076..8a4ea95 100644
--- a/backend/config/locales/app.de.yml
+++ b/backend/config/locales/app.de.yml
@@ -1,4 +1,7 @@
 de:
+  api:
+    errors:
+      user_concurrent_stream: "Mit diesem Konto läuft bereits eine Direktübertragung. Beende sie, bevor du eine weitere startest."
   password_policy:
     hint: "Mindestens 8 Zeichen, mit mindestens 3 aus: Kleinbuchstaben, Großbuchstaben, Zahlen und Symbolen."
   activerecord:
@@ -77,10 +80,10 @@ de:
       title: "Verein registrieren — Match Live TV"
       meta_description: Erstelle deinen Sportverein und das erste Team auf Match Live TV.
       heading: Dein Verein
-      lead: "Registriere den Verein: du kannst später weitere Teams hinzufügen (U13, U15, Serie C…)."
+      lead: "Registriere den Verein: du kannst später weitere Teams hinzufügen (U13, U15, erste Mannschaft…)."
       section_club: Verein
       name_label: Vereinsname / Club
-      name_placeholder: "z. B. Crazy Volley Rozzano"
+      name_placeholder: "z. B. Team MLTV"
       section_first_team: Erstes Team
       default_first_team_name: Erstes Team
       first_team_name_label: Teamname
@@ -159,7 +162,7 @@ de:
       heading: Neues Team
       club_label: "Verein:"
       name_label: Teamname
-      name_placeholder: "z. B. Under 13, Serie C"
+      name_placeholder: "z. B. U15 männlich"
       branding_legend: Branding-Überschreibung (optional)
       submit: Team hinzufügen
     invite:
@@ -235,7 +238,7 @@ de:
   matches:
     back_to_list: "← Spieleliste"
     opponent_label: Gegner
-    opponent_placeholder: "z. B. Volley Milano"
+    opponent_placeholder: "z. B. Team Guest"
     location_label: "Ort (optional)"
     location_placeholder: "Halle, Stadt"
     datetime_label: Datum und Uhrzeit
@@ -361,7 +364,7 @@ de:
       legend_hint: "Alle markierten Felder sind erforderlich, um einen Premium-Tarif zu abonnieren und Rechnungen auszustellen. Vereine benötigen eine USt-IdNr., Privatpersonen eine Steuernummer. Du brauchst entweder SDI oder eine zertifizierte E-Mail (PEC). Die Zahlungen werden weiterhin sicher von Stripe abgewickelt."
       entity_type_label: "Art des Rechnungsempfängers *"
       legal_name_label: "Firmenname / Vor- und Nachname *"
-      legal_name_placeholder: "z. B. ASD Tigers Volley"
+      legal_name_placeholder: "z. B. Team MLTV"
       vat_number_label: "USt-IdNr. * (Verein)"
       fiscal_code_label: "Steuernummer * (Privatperson)"
       fiscal_code_placeholder: RSSMRA80A01H501U
@@ -738,7 +741,7 @@ de:
       replay_archive_link: "Vergangene Live-Übertragungen — Wiederholungsarchiv"
       schedule_match_link: "Spiel planen"
       search_placeholder_club: "Verein, Team, Gegner oder Ort suchen…"
-      search_placeholder_default: "Z. B. Crazy Volley, Serie D, Gegner…"
+      search_placeholder_default: "Z. B. Team MLTV, Team Guest…"
       search_aria_label: "Team suchen"
       search_button: "Suchen"
       reset_link: "Zurücksetzen"
@@ -772,7 +775,7 @@ de:
       empty_hero_cta_features: "Erfahre, wie es funktioniert"
       demo_aria_label: "Beispiel einer aktiven Live-Übertragung"
       demo_label: "Beispiel — so sieht eine aktive Übertragung aus"
-      demo_meta: "PalaTigers · Match Live TV"
+      demo_meta: "Pala MLTV · Match Live TV"
       demo_sets: "Satz 2 · Sätze gewonnen 1-0"
     show:
       back_to_all: "← Alle Live-Übertragungen"
@@ -805,7 +808,7 @@ de:
       back_to_live: "← Live-Übertragungen"
       title: "Vergangene Live-Übertragungen"
       hint: "Öffentliche Wiederholungen von Sportvereinen — betrifft bereits übertragene Spiele."
-      search_placeholder: "Z. B. Tigers Volley, Gegner, Verein, Ort…"
+      search_placeholder: "Z. B. Team MLTV, Team Guest…"
       search_aria_label: "Wiederholung suchen"
       search_button: "Suchen"
       reset_link: "Zurücksetzen"
diff --git a/backend/config/locales/app.en.yml b/backend/config/locales/app.en.yml
index 132dcdf..aa4e6a3 100644
--- a/backend/config/locales/app.en.yml
+++ b/backend/config/locales/app.en.yml
@@ -1,4 +1,7 @@
 en:
+  api:
+    errors:
+      user_concurrent_stream: "You already have a live stream running on this account. Stop it before starting another."
   password_policy:
     hint: "At least 8 characters, including 3 of: lowercase, uppercase, numbers and symbols."
   activerecord:
@@ -82,10 +85,10 @@ en:
       title: "Register a club — Match Live TV"
       meta_description: Create your sports club and its first team on Match Live TV.
       heading: Your club
-      lead: "Register the club: you'll be able to add more teams (Under 13, Under 15, Serie C…)."
+      lead: "Register the club: you'll be able to add more teams (Under 13, Under 15, first team…)."
       section_club: Club
       name_label: Club name
-      name_placeholder: "e.g. Crazy Volley Rozzano"
+      name_placeholder: "e.g. Team MLTV"
       section_first_team: First team
       default_first_team_name: First team
       first_team_name_label: Team name
@@ -164,7 +167,7 @@ en:
       heading: New team
       club_label: "Club:"
       name_label: Team name
-      name_placeholder: "e.g. Under 13, Serie C"
+      name_placeholder: "e.g. U15 boys"
       branding_legend: Branding override (optional)
       submit: Add team
     invite:
@@ -240,7 +243,7 @@ en:
   matches:
     back_to_list: "← Match list"
     opponent_label: Opponent
-    opponent_placeholder: "e.g. Volley Milano"
+    opponent_placeholder: "e.g. Team Guest"
     location_label: "Location (optional)"
     location_placeholder: "Gym, city"
     datetime_label: Date and time
@@ -366,7 +369,7 @@ en:
       legend_hint: "All marked fields are required to subscribe to a premium plan and to issue invoices. Clubs need a VAT number; private individuals need a fiscal code. You need either SDI or certified email (PEC). Payments remain securely handled by Stripe."
       entity_type_label: "Billing entity type *"
       legal_name_label: "Legal name / full name *"
-      legal_name_placeholder: "e.g. ASD Tigers Volley"
+      legal_name_placeholder: "e.g. Team MLTV"
       vat_number_label: "VAT number * (club)"
       fiscal_code_label: "Fiscal code * (private individual)"
       fiscal_code_placeholder: RSSMRA80A01H501U
@@ -743,7 +746,7 @@ en:
       replay_archive_link: "Past live streams — replay archive"
       schedule_match_link: "Schedule a match"
       search_placeholder_club: "Search club, team, opponent or venue…"
-      search_placeholder_default: "E.g. Crazy Volley, Serie D, opponent…"
+      search_placeholder_default: "E.g. Team MLTV, Team Guest…"
       search_aria_label: "Search team"
       search_button: "Search"
       reset_link: "Reset"
@@ -777,7 +780,7 @@ en:
       empty_hero_cta_features: "See how it works"
       demo_aria_label: "Example of an active live stream"
       demo_label: "Example — this is how an active stream looks"
-      demo_meta: "PalaTigers · Match Live TV"
+      demo_meta: "Pala MLTV · Match Live TV"
       demo_sets: "Set 2 · Sets won 1-0"
     show:
       back_to_all: "← All live streams"
@@ -810,7 +813,7 @@ en:
       back_to_live: "← Live streams"
       title: "Past live streams"
       hint: "Public replays from sports clubs — covers matches already broadcast."
-      search_placeholder: "E.g. Tigers Volley, opponent, club, venue…"
+      search_placeholder: "E.g. Team MLTV, Team Guest…"
       search_aria_label: "Search replays"
       search_button: "Search"
       reset_link: "Reset"
diff --git a/backend/config/locales/app.es.yml b/backend/config/locales/app.es.yml
index a6f1902..b1016c6 100644
--- a/backend/config/locales/app.es.yml
+++ b/backend/config/locales/app.es.yml
@@ -1,4 +1,7 @@
 es:
+  api:
+    errors:
+      user_concurrent_stream: "Ya tienes un directo en curso con esta cuenta. Ciérralo antes de iniciar otro."
   password_policy:
     hint: "Mínimo 8 caracteres, con al menos 3 entre: minúsculas, mayúsculas, números y símbolos."
   activerecord:
@@ -77,10 +80,10 @@ es:
       title: "Registrar un club — Match Live TV"
       meta_description: Crea tu club deportivo y su primer equipo en Match Live TV.
       heading: Tu club
-      lead: "Registra el club: podrás añadir más equipos (Sub-13, Sub-15, Serie C…)."
+      lead: "Registra el club: podrás añadir más equipos (Sub-13, Sub-15, primer equipo…)."
       section_club: Club
       name_label: Nombre del club
-      name_placeholder: "ej. Crazy Volley Rozzano"
+      name_placeholder: "ej. Team MLTV"
       section_first_team: Primer equipo
       default_first_team_name: Primer equipo
       first_team_name_label: Nombre del equipo
@@ -159,7 +162,7 @@ es:
       heading: Nuevo equipo
       club_label: "Club:"
       name_label: Nombre del equipo
-      name_placeholder: "ej. Sub-13, Serie C"
+      name_placeholder: "ej. U15 masculino"
       branding_legend: Personalización de imagen de marca (opcional)
       submit: Añadir equipo
     invite:
@@ -235,7 +238,7 @@ es:
   matches:
     back_to_list: "← Lista de partidos"
     opponent_label: Rival
-    opponent_placeholder: "ej. Volley Milano"
+    opponent_placeholder: "ej. Team Guest"
     location_label: "Lugar (opcional)"
     location_placeholder: "Pabellón, ciudad"
     datetime_label: Fecha y hora
@@ -361,7 +364,7 @@ es:
       legend_hint: "Todos los campos marcados son obligatorios para suscribirte a un plan premium y para emitir facturas. Los clubes necesitan NIF/CIF; las personas físicas, el código fiscal. Necesitas SDI o correo certificado (PEC). Los pagos siguen gestionados de forma segura por Stripe."
       entity_type_label: "Tipo de titular *"
       legal_name_label: "Razón social / nombre y apellidos *"
-      legal_name_placeholder: "ej. ASD Tigers Volley"
+      legal_name_placeholder: "ej. Team MLTV"
       vat_number_label: "NIF/CIF * (club)"
       fiscal_code_label: "Código fiscal * (persona física)"
       fiscal_code_placeholder: RSSMRA80A01H501U
@@ -738,7 +741,7 @@ es:
       replay_archive_link: "Directos pasados — archivo de repeticiones"
       schedule_match_link: "Programar partido"
       search_placeholder_club: "Buscar club, equipo, rival o lugar…"
-      search_placeholder_default: "Ej. Crazy Volley, Serie D, rival…"
+      search_placeholder_default: "Ej. Team MLTV, Team Guest…"
       search_aria_label: "Buscar equipo"
       search_button: "Buscar"
       reset_link: "Restablecer"
@@ -772,7 +775,7 @@ es:
       empty_hero_cta_features: "Descubre cómo funciona"
       demo_aria_label: "Ejemplo de un directo activo"
       demo_label: "Ejemplo — así se ve un directo activo"
-      demo_meta: "PalaTigers · Match Live TV"
+      demo_meta: "Pala MLTV · Match Live TV"
       demo_sets: "Set 2 · Sets ganados 1-0"
     show:
       back_to_all: "← Todos los directos"
@@ -805,7 +808,7 @@ es:
       back_to_live: "← Directos en curso"
       title: "Directos pasados"
       hint: "Repeticiones públicas de los clubes deportivos — corresponde a partidos ya transmitidos."
-      search_placeholder: "Ej. Tigers Volley, rival, club, lugar…"
+      search_placeholder: "Ej. Team MLTV, Team Guest…"
       search_aria_label: "Buscar repetición"
       search_button: "Buscar"
       reset_link: "Restablecer"
diff --git a/backend/config/locales/app.fr.yml b/backend/config/locales/app.fr.yml
index 99cff0e..707822c 100644
--- a/backend/config/locales/app.fr.yml
+++ b/backend/config/locales/app.fr.yml
@@ -1,4 +1,7 @@
 fr:
+  api:
+    errors:
+      user_concurrent_stream: "Un direct est déjà en cours avec ce compte. Arrêtez-le avant d’en démarrer un autre."
   password_policy:
     hint: "Au moins 8 caractères, avec au moins 3 parmi : minuscules, majuscules, chiffres et symboles."
   activerecord:
@@ -77,10 +80,10 @@ fr:
       title: "Inscrire un club — Match Live TV"
       meta_description: Crée ton club sportif et sa première équipe sur Match Live TV.
       heading: Ton club
-      lead: "Inscris le club : tu pourras ajouter d'autres équipes (Under 13, Under 15, Serie C…)."
+      lead: "Inscris le club : tu pourras ajouter d'autres équipes (Under 13, Under 15, première équipe…)."
       section_club: Club
       name_label: Nom du club
-      name_placeholder: "ex. Crazy Volley Rozzano"
+      name_placeholder: "ex. Team MLTV"
       section_first_team: Première équipe
       default_first_team_name: Première équipe
       first_team_name_label: Nom de l'équipe
@@ -159,7 +162,7 @@ fr:
       heading: Nouvelle équipe
       club_label: "Club :"
       name_label: Nom de l'équipe
-      name_placeholder: "ex. Under 13, Serie C"
+      name_placeholder: "ex. U15 masculin"
       branding_legend: Personnalisation de l'image de marque (facultatif)
       submit: Ajouter l'équipe
     invite:
@@ -235,7 +238,7 @@ fr:
   matches:
     back_to_list: "← Liste des matchs"
     opponent_label: Adversaire
-    opponent_placeholder: "ex. Volley Milano"
+    opponent_placeholder: "ex. Team Guest"
     location_label: "Lieu (facultatif)"
     location_placeholder: "Gymnase, ville"
     datetime_label: Date et heure
@@ -361,7 +364,7 @@ fr:
       legend_hint: "Tous les champs marqués sont obligatoires pour souscrire à un forfait premium et pour émettre les factures. Les clubs ont besoin d'un numéro de TVA ; les personnes physiques d'un code fiscal. Il faut le SDI ou le PEC. Les paiements restent gérés en toute sécurité par Stripe."
       entity_type_label: "Type de titulaire *"
       legal_name_label: "Raison sociale / nom et prénom *"
-      legal_name_placeholder: "ex. ASD Tigers Volley"
+      legal_name_placeholder: "ex. Team MLTV"
       vat_number_label: "Numéro de TVA * (club)"
       fiscal_code_label: "Code fiscal * (personne physique)"
       fiscal_code_placeholder: RSSMRA80A01H501U
@@ -738,7 +741,7 @@ fr:
       replay_archive_link: "Directs passés — archive des replays"
       schedule_match_link: "Programmer un match"
       search_placeholder_club: "Rechercher club, équipe, adversaire ou lieu…"
-      search_placeholder_default: "Ex. Crazy Volley, Série D, adversaire…"
+      search_placeholder_default: "Ex. Team MLTV, Team Guest…"
       search_aria_label: "Rechercher une équipe"
       search_button: "Rechercher"
       reset_link: "Réinitialiser"
@@ -772,7 +775,7 @@ fr:
       empty_hero_cta_features: "Découvrez comment ça marche"
       demo_aria_label: "Exemple de direct actif"
       demo_label: "Exemple — voici à quoi ressemble un direct actif"
-      demo_meta: "PalaTigers · Match Live TV"
+      demo_meta: "Pala MLTV · Match Live TV"
       demo_sets: "Set 2 · Sets gagnés 1-0"
     show:
       back_to_all: "← Tous les directs"
@@ -805,7 +808,7 @@ fr:
       back_to_live: "← Directs en cours"
       title: "Directs passés"
       hint: "Replays publics des clubs sportifs — concerne les matchs déjà diffusés."
-      search_placeholder: "Ex. Tigers Volley, adversaire, club, lieu…"
+      search_placeholder: "Ex. Team MLTV, Team Guest…"
       search_aria_label: "Rechercher un replay"
       search_button: "Rechercher"
       reset_link: "Réinitialiser"
diff --git a/backend/config/locales/app.it.yml b/backend/config/locales/app.it.yml
index 8efa8df..961f633 100644
--- a/backend/config/locales/app.it.yml
+++ b/backend/config/locales/app.it.yml
@@ -1,4 +1,7 @@
 it:
+  api:
+    errors:
+      user_concurrent_stream: "Hai già una diretta in corso con questo account. Chiudila prima di avviarne un’altra."
   password_policy:
     hint: "Minimo 8 caratteri, con almeno 3 tra: minuscole, maiuscole, numeri e simboli."
   activerecord:
@@ -82,10 +85,10 @@ it:
       title: "Registra società — Match Live TV"
       meta_description: Crea la società sportiva e la prima squadra su Match Live TV.
       heading: La tua società
-      lead: "Registra il club: potrai aggiungere più squadre (Under 13, Under 15, Serie C…)."
+      lead: "Registra il club: potrai aggiungere più squadre (Under 13, Under 15, prima squadra…)."
       section_club: Società
       name_label: Nome società / club
-      name_placeholder: "es. Crazy Volley Rozzano"
+      name_placeholder: "es. Team MLTV"
       section_first_team: Prima squadra
       default_first_team_name: Prima squadra
       first_team_name_label: Nome squadra
@@ -164,7 +167,7 @@ it:
       heading: Nuova squadra
       club_label: "Società:"
       name_label: Nome squadra
-      name_placeholder: "es. Under 13, Serie C"
+      name_placeholder: "es. U15 maschile"
       branding_legend: Override branding (opzionale)
       submit: Aggiungi squadra
     invite:
@@ -240,7 +243,7 @@ it:
   matches:
     back_to_list: "← Elenco partite"
     opponent_label: Avversario
-    opponent_placeholder: "es. Volley Milano"
+    opponent_placeholder: "es. Squadra ospite"
     location_label: "Luogo (opzionale)"
     location_placeholder: "Palestra, città"
     datetime_label: Data e ora
@@ -367,7 +370,7 @@ it:
       legend_hint: "Tutti i campi contrassegnati sono obbligatori per abbonarti a un piano premium e per emettere le fatture. Per le società serve la P.IVA; per le persone fisiche il Codice Fiscale. Serve SDI oppure PEC. I pagamenti restano gestiti in modo sicuro da Stripe."
       entity_type_label: "Tipo intestatario *"
       legal_name_label: "Ragione sociale / nome e cognome *"
-      legal_name_placeholder: "es. ASD Tigers Volley"
+      legal_name_placeholder: "es. Team MLTV"
       vat_number_label: "Partita IVA * (società)"
       fiscal_code_label: "Codice Fiscale * (persona fisica)"
       fiscal_code_placeholder: RSSMRA80A01H501U
@@ -771,7 +774,7 @@ it:
       replay_archive_link: "Live passate — archivio replay"
       schedule_match_link: "Programma partita"
       search_placeholder_club: "Cerca società, squadra, avversario o luogo…"
-      search_placeholder_default: "Es. Crazy Volley, Serie D, avversario…"
+      search_placeholder_default: "Es. Team MLTV, Squadra ospite…"
       search_aria_label: "Cerca squadra"
       search_button: "Cerca"
       reset_link: "Azzera"
@@ -805,7 +808,7 @@ it:
       empty_hero_cta_features: "Scopri come funziona"
       demo_aria_label: "Esempio di diretta attiva"
       demo_label: "Esempio — così appare una diretta attiva"
-      demo_meta: "PalaTigers · Match Live TV"
+      demo_meta: "Pala MLTV · Match Live TV"
       demo_sets: "Set 2 · Set vinti 1-0"
     show:
       back_to_all: "← Tutte le dirette"
@@ -838,7 +841,7 @@ it:
       back_to_live: "← Dirette live"
       title: "Live passate"
       hint: "Replay pubblici delle società sportive — riguarda le partite già trasmesse."
-      search_placeholder: "Es. Tigers Volley, avversario, società, luogo…"
+      search_placeholder: "Es. Team MLTV, Squadra ospite…"
       search_aria_label: "Cerca replay"
       search_button: "Cerca"
       reset_link: "Azzera"
diff --git a/backend/config/locales/demo.yml b/backend/config/locales/demo.yml
new file mode 100644
index 0000000..60b2c6e
--- /dev/null
+++ b/backend/config/locales/demo.yml
@@ -0,0 +1,20 @@
+it:
+  demo:
+    away_team: Squadra ospite
+    when: "Sabato 12 settembre · 10:30"
+en:
+  demo:
+    away_team: Team Guest
+    when: "Saturday 12 September · 10:30"
+de:
+  demo:
+    away_team: Team Guest
+    when: "Samstag, 12. September · 10:30"
+fr:
+  demo:
+    away_team: Team Guest
+    when: "Samedi 12 septembre · 10:30"
+es:
+  demo:
+    away_team: Team Guest
+    when: "Sábado 12 de septiembre · 10:30"
diff --git a/backend/config/locales/pages.de.yml b/backend/config/locales/pages.de.yml
index 92a2cad..c91a56a 100644
--- a/backend/config/locales/pages.de.yml
+++ b/backend/config/locales/pages.de.yml
@@ -59,11 +59,8 @@ de:
       replay_item_download: Video bei Bedarf aufs Handy herunterladen
       replay_card_title: Spielarchiv
       replay_card_body: Spiele nach dem Schlusspfiff noch einmal ansehen und bei Bedarf herunterladen.
-      replay_mock_1_title: Rossi vs Neri
       replay_mock_1_meta: "12/05 · 01:25:34"
-      replay_mock_2_title: Rossi vs Blu
       replay_mock_2_meta: "05/05 · 01:18:22"
-      replay_mock_3_title: Rossi vs Bianchi
       replay_mock_3_meta: "28/04 · 01:07:15"
       more_title: Auch das gehört zum Produkt
       more_stable_title: Livestream vom Smartphone
@@ -76,6 +73,19 @@ de:
       cta_body: Probieren Sie Match Live TV kostenlos. Keine spezielle Ausrüstung nötig.
       cta_primary: Kostenlos starten
       cta_secondary: Pläne vergleichen
+    sponsor_cover:
+      eyebrow: Premium Full
+      title: Gib deinen Sponsoren Sichtbarkeit
+      body: Mit Premium Full kannst du das Titelbild jedes Spiels anpassen, indem du eine Grafik eures Vereins hochlädst. Darin könnt ihr Sponsoren, Partner, Logos und Botschaften unterbringen und ihnen schon vor dem Livestream Sichtbarkeit geben.
+      item_cover: Titelbild für jedes Spiel hochladen
+      item_before: Grafik sichtbar im Pre-Live
+      item_club: Die Identität eures Vereins, kein generisches Template
+      claim: Euer Verein. Eure Sponsoren. Euer Livestream.
+      cta: Premium Full entdecken
+      mock:
+        state: PRE-LIVE
+        art_label: Individuelles Titelbild
+        soon: Der Livestream beginnt in Kürze
     pricing:
       meta_title: "Preise für Jugendspiel-Streaming — Match Live TV"
       meta_description: "Free-, Premium-Light- und Premium-Full-Pläne für Livestreams und Spielarchiv. Jahresabo für Vereine: mehr Team-Mitglieder, mehr parallele Spiele, Replay und YouTube."
@@ -90,6 +100,7 @@ de:
       table_youtube: YouTube
       table_replay: Replay-Archiv
       table_download: Handy-Download
+      table_cover_sponsor: Individuelles Titelbild
       table_price: Preis
       table_price_free: "€0"
       table_price_note: "Listenpreis %{list} — %{monthly}"
@@ -121,6 +132,7 @@ de:
       youtube_mltv: Match Live TV
       youtube_club: Vereinskanal
       youtube_none: nein
+      cover_sponsor_html: "Anpassbares Titelbild <strong>mit Sponsoren</strong>"
       complete_billing: Rechnungsdaten vervollständigen
       start_free: Kostenlos starten
       register_with_price: "Registrieren — %{price}"
@@ -150,6 +162,8 @@ de:
       q9_question: Wie funktioniert die Garantie „Zufrieden oder Geld zurück“?
       q9_answer_html: "Sie können Match Live TV 30 Tage ab Aktivierung des ersten Abos mit Ihrem Verein testen. Wenn die Plattform in diesem Zeitraum nicht zu Ihren Anforderungen passt, können Sie die Erstattung des vollen gezahlten Betrags beantragen. Weitere Details finden Sie in den %{terms_link}."
       q9_terms_link: Nutzungsbedingungen
+      q10_question: Kann ich die Sponsoren des Vereins in den Übertragungen zeigen?
+      q10_answer: Mit Premium Full kannst du ein individuelles Titelbild für das Spiel hochladen. Der Verein bereitet die eigene Grafik vor und kann darin Sponsoren, Partner, Logos und Botschaften unterbringen. Das Titelbild erscheint vor Beginn des Livestreams und gibt den Unterstützern des Clubs Sichtbarkeit.
       cta_signup: Team registrieren
       cta_live: Live-Spiele ansehen
     volleyball:
diff --git a/backend/config/locales/pages.en.yml b/backend/config/locales/pages.en.yml
index 8da70f0..159a179 100644
--- a/backend/config/locales/pages.en.yml
+++ b/backend/config/locales/pages.en.yml
@@ -59,11 +59,8 @@ en:
       replay_item_download: Download the video to your phone when you need it
       replay_card_title: Match archive
       replay_card_body: Rewatch matches after the final whistle and download them when you need them.
-      replay_mock_1_title: Rossi vs Neri
       replay_mock_1_meta: "12/05 · 01:25:34"
-      replay_mock_2_title: Rossi vs Blu
       replay_mock_2_meta: "05/05 · 01:18:22"
-      replay_mock_3_title: Rossi vs Bianchi
       replay_mock_3_meta: "28/04 · 01:07:15"
       more_title: Also part of the product
       more_stable_title: Stream from your smartphone
@@ -76,6 +73,19 @@ en:
       cta_body: Try Match Live TV for free. No dedicated equipment needed.
       cta_primary: Start for free
       cta_secondary: Compare plans
+    sponsor_cover:
+      eyebrow: Premium Full
+      title: Give your sponsors visibility
+      body: With Premium Full you can customise each match cover by uploading artwork from your club. You can include sponsors, partners, logos and messages in that graphic, giving them visibility before the live stream starts.
+      item_cover: A cover uploaded for every match
+      item_before: Artwork shown in the pre-live screen
+      item_club: Your club’s identity, not a generic template
+      claim: Your club. Your sponsors. Your stream.
+      cta: Discover Premium Full
+      mock:
+        state: PRE-LIVE
+        art_label: Custom cover
+        soon: The live stream will start shortly
     pricing:
       meta_title: "Youth match streaming pricing — Match Live TV"
       meta_description: "Free, Premium Light and Premium Full plans for live streaming and match archive. Annual subscription for clubs: more staff, more concurrent matches, replay and YouTube."
@@ -90,6 +100,7 @@ en:
       table_youtube: YouTube
       table_replay: Replay archive
       table_download: Phone download
+      table_cover_sponsor: Custom cover
       table_price: Price
       table_price_free: "€0"
       table_price_note: "list %{list} — %{monthly}"
@@ -121,6 +132,7 @@ en:
       youtube_mltv: Match Live TV
       youtube_club: club channel
       youtube_none: "no"
+      cover_sponsor_html: "Customisable cover <strong>with sponsors</strong>"
       complete_billing: Complete billing details
       start_free: Start for free
       register_with_price: "Register — %{price}"
@@ -150,6 +162,8 @@ en:
       q9_question: How does the Satisfied or refunded guarantee work?
       q9_answer_html: "You can try Match Live TV with your club for 30 days from activation of the first subscription. If within that period you feel the platform is not a good fit, you can request a refund of the full amount paid. For more details see the %{terms_link}."
       q9_terms_link: Terms and Conditions
+      q10_question: Can I include the club’s sponsors in the broadcasts?
+      q10_answer: With Premium Full you can upload a custom cover for the match. The club prepares its own artwork and can include sponsors, partners, logos and messages in that graphic. The cover is shown before the live stream starts, giving visibility to the organisations that support the club.
       cta_signup: Register your team
       cta_live: Watch live matches
     volleyball:
diff --git a/backend/config/locales/pages.es.yml b/backend/config/locales/pages.es.yml
index 48b73ce..1d4a80f 100644
--- a/backend/config/locales/pages.es.yml
+++ b/backend/config/locales/pages.es.yml
@@ -59,11 +59,8 @@ es:
       replay_item_download: Descarga del vídeo al móvil cuando haga falta
       replay_card_title: Archivo de partidos
       replay_card_body: Vuelve a ver los partidos tras el pitido final y descárgalos cuando los necesites.
-      replay_mock_1_title: Rossi vs Neri
       replay_mock_1_meta: "12/05 · 01:25:34"
-      replay_mock_2_title: Rossi vs Blu
       replay_mock_2_meta: "05/05 · 01:18:22"
-      replay_mock_3_title: Rossi vs Bianchi
       replay_mock_3_meta: "28/04 · 01:07:15"
       more_title: También forma parte del producto
       more_stable_title: Directo desde el smartphone
@@ -76,6 +73,19 @@ es:
       cta_body: Prueba Match Live TV gratis. No hace falta equipo dedicado.
       cta_primary: Empieza gratis
       cta_secondary: Compara los planes
+    sponsor_cover:
+      eyebrow: Premium Full
+      title: Da visibilidad a tus patrocinadores
+      body: Con Premium Full puedes personalizar la portada de cada partido subiendo una gráfica de tu club. Así puedes incluir patrocinadores, partners, logotipos y mensajes, y darles visibilidad ya antes de que empiece el directo.
+      item_cover: Portada cargada para cada partido
+      item_before: Gráfica visible en el pre-directo
+      item_club: La identidad de tu club, no una plantilla genérica
+      claim: Tu club. Tus patrocinadores. Tu directo.
+      cta: Descubre Premium Full
+      mock:
+        state: PRE-LIVE
+        art_label: Portada personalizada
+        soon: El directo comenzará en breve
     pricing:
       meta_title: "Precios de streaming de partidos juveniles — Match Live TV"
       meta_description: "Planes Free, Premium Light y Premium Full para directos y archivo de partidos. Suscripción anual para clubes: más staff, más partidos en paralelo, repetición y YouTube."
@@ -90,6 +100,7 @@ es:
       table_youtube: YouTube
       table_replay: Archivo de replay
       table_download: Descarga al móvil
+      table_cover_sponsor: Portada personalizada
       table_price: Precio
       table_price_free: "€0"
       table_price_note: "tarifa %{list} — %{monthly}"
@@ -121,6 +132,7 @@ es:
       youtube_mltv: Match Live TV
       youtube_club: canal del club
       youtube_none: "no"
+      cover_sponsor_html: "Portada personalizable <strong>con patrocinadores</strong>"
       complete_billing: Completar datos de facturación
       start_free: Empieza gratis
       register_with_price: "Regístrate — %{price}"
@@ -150,6 +162,8 @@ es:
       q9_question: "¿Cómo funciona la garantía Satisfechos o reembolsados?"
       q9_answer_html: "Puedes probar Match Live TV con tu club durante 30 días desde la activación de la primera suscripción. Si en ese periodo consideras que la plataforma no se adapta a tus necesidades, puedes solicitar el reembolso del importe íntegro pagado. Para más detalles consulta los %{terms_link}."
       q9_terms_link: Términos y Condiciones
+      q10_question: ¿Puedo incluir a los patrocinadores del club en los directos?
+      q10_answer: Con Premium Full puedes subir una portada personalizada para el partido. El club prepara su propia gráfica e incluye patrocinadores, partners, logotipos y mensajes. La portada se muestra antes del inicio del directo, dando visibilidad a quienes apoyan al club.
       cta_signup: Registra tu equipo
       cta_live: Ver directos
     volleyball:
diff --git a/backend/config/locales/pages.fr.yml b/backend/config/locales/pages.fr.yml
index df67960..fb9d603 100644
--- a/backend/config/locales/pages.fr.yml
+++ b/backend/config/locales/pages.fr.yml
@@ -59,11 +59,8 @@ fr:
       replay_item_download: Téléchargement de la vidéo sur le téléphone si besoin
       replay_card_title: Archive des matchs
       replay_card_body: Revoyez les matchs après le coup de sifflet final et téléchargez-les quand vous en avez besoin.
-      replay_mock_1_title: Rossi vs Neri
       replay_mock_1_meta: "12/05 · 01:25:34"
-      replay_mock_2_title: Rossi vs Blu
       replay_mock_2_meta: "05/05 · 01:18:22"
-      replay_mock_3_title: Rossi vs Bianchi
       replay_mock_3_meta: "28/04 · 01:07:15"
       more_title: Cela fait aussi partie du produit
       more_stable_title: Direct depuis le smartphone
@@ -76,6 +73,19 @@ fr:
       cta_body: Essayez Match Live TV gratuitement. Aucun matériel dédié nécessaire.
       cta_primary: Commencer gratuitement
       cta_secondary: Comparer les offres
+    sponsor_cover:
+      eyebrow: Premium Full
+      title: Donnez de la visibilité à vos sponsors
+      body: Avec Premium Full, vous pouvez personnaliser la jaquette de chaque match en chargeant un graphisme de votre club. Vous pouvez y intégrer sponsors, partenaires, logos et messages, et leur donner de la visibilité avant le début du direct.
+      item_cover: Jaquette chargée pour chaque match
+      item_before: Graphisme visible en pré-direct
+      item_club: L’identité de votre club, pas un modèle générique
+      claim: Votre club. Vos sponsors. Votre direct.
+      cta: Découvrir Premium Full
+      mock:
+        state: PRE-LIVE
+        art_label: Jaquette personnalisée
+        soon: Le direct va bientôt commencer
     pricing:
       meta_title: "Tarifs streaming des matchs jeunes — Match Live TV"
       meta_description: "Offres Free, Premium Light et Premium Full pour le direct et l'archive des matchs. Abonnement annuel pour les clubs : plus de staff, plus de matchs en parallèle, replay et YouTube."
@@ -90,6 +100,7 @@ fr:
       table_youtube: YouTube
       table_replay: Archive replay
       table_download: Téléchargement téléphone
+      table_cover_sponsor: Jaquette personnalisée
       table_price: Prix
       table_price_free: "€0"
       table_price_note: "tarif %{list} — %{monthly}"
@@ -121,6 +132,7 @@ fr:
       youtube_mltv: Match Live TV
       youtube_club: chaîne du club
       youtube_none: non
+      cover_sponsor_html: "Jaquette personnalisable <strong>avec sponsors</strong>"
       complete_billing: Compléter les données de facturation
       start_free: Commencer gratuitement
       register_with_price: "S'inscrire — %{price}"
@@ -150,6 +162,8 @@ fr:
       q9_question: Comment fonctionne la garantie Satisfait ou remboursé ?
       q9_answer_html: "Vous pouvez essayer Match Live TV avec votre club pendant 30 jours à compter de l'activation du premier abonnement. Si dans ce délai la plateforme ne convient pas à vos besoins, vous pouvez demander le remboursement de la totalité du montant payé. Pour plus de détails, consultez les %{terms_link}."
       q9_terms_link: Conditions générales
+      q10_question: Puis-je afficher les sponsors du club dans les directs ?
+      q10_answer: Avec Premium Full, vous pouvez charger une jaquette personnalisée pour le match. Le club prépare son propre graphisme et peut y intégrer sponsors, partenaires, logos et messages. La jaquette s’affiche avant le début du direct, donnant de la visibilité aux réalités qui soutiennent le club.
       cta_signup: Inscrire l'équipe
       cta_live: Voir les directs
     volleyball:
diff --git a/backend/config/locales/pages.it.yml b/backend/config/locales/pages.it.yml
index 10e1939..ece9dc5 100644
--- a/backend/config/locales/pages.it.yml
+++ b/backend/config/locales/pages.it.yml
@@ -59,11 +59,8 @@ it:
       replay_item_download: Download del video sul telefono quando serve
       replay_card_title: Archivio partite
       replay_card_body: Rivedi le gare dopo il fischio finale e scaricale quando ti servono.
-      replay_mock_1_title: Rossi vs Neri
       replay_mock_1_meta: "12/05 · 01:25:34"
-      replay_mock_2_title: Rossi vs Blu
       replay_mock_2_meta: "05/05 · 01:18:22"
-      replay_mock_3_title: Rossi vs Bianchi
       replay_mock_3_meta: "28/04 · 01:07:15"
       more_title: Anche questo fa parte del prodotto
       more_stable_title: Diretta dallo smartphone
@@ -76,6 +73,19 @@ it:
       cta_body: Prova Match Live TV gratuitamente. Non serve attrezzatura dedicata.
       cta_primary: Inizia gratis
       cta_secondary: Confronta i piani
+    sponsor_cover:
+      eyebrow: Premium Full
+      title: Dai visibilità ai tuoi sponsor
+      body: Con Premium Full puoi personalizzare la copertina di ogni partita caricando una grafica della tua società. Puoi così inserire sponsor, partner, loghi e comunicazioni e dare loro visibilità già prima dell’inizio della diretta.
+      item_cover: Copertina caricata per ogni partita
+      item_before: Grafica visibile nel pre-live
+      item_club: Identità della società, non un template generico
+      claim: Il tuo club. I tuoi sponsor. La tua diretta.
+      cta: Scopri Premium Full
+      mock:
+        state: PRE-LIVE
+        art_label: Copertina personalizzata
+        soon: La diretta inizierà a breve
     pricing:
       meta_title: "Prezzi streaming partite giovanili — Match Live TV"
       meta_description: "Piani Free, Premium Light e Premium Full per dirette live e archivio partite. Abbonamento annuale per società: più staff, più partite in parallelo, replay e YouTube."
@@ -90,6 +100,7 @@ it:
       table_youtube: YouTube
       table_replay: Archivio replay
       table_download: Download telefono
+      table_cover_sponsor: Copertina personalizzata
       table_price: Prezzo
       table_price_free: "€0"
       table_price_note: "listino %{list} — %{monthly}"
@@ -121,6 +132,7 @@ it:
       youtube_mltv: Match Live TV
       youtube_club: canale società
       youtube_none: "no"
+      cover_sponsor_html: "Copertina personalizzabile <strong>con sponsor</strong>"
       complete_billing: Completa dati di fatturazione
       start_free: Inizia gratis
       register_with_price: "Registrati — %{price}"
@@ -150,6 +162,8 @@ it:
       q9_question: Come funziona la garanzia Soddisfatti o rimborsati?
       q9_answer_html: "Puoi provare Match Live TV con la tua società per 30 giorni dall'attivazione del primo abbonamento. Se entro questo periodo ritieni che la piattaforma non sia adatta alle tue esigenze, puoi richiedere il rimborso dell'intero importo pagato. Per maggiori dettagli consulta i %{terms_link}."
       q9_terms_link: Termini e Condizioni
+      q10_question: Posso inserire gli sponsor della società nelle dirette?
+      q10_answer: Con Premium Full puoi caricare una copertina personalizzata per la partita. La società può preparare la propria grafica inserendo sponsor, partner, loghi e comunicazioni. La copertina viene mostrata prima dell’inizio della diretta, permettendo di dare visibilità alle realtà che sostengono il club.
       cta_signup: Registra la squadra
       cta_live: Guarda le dirette
     volleyball:
diff --git a/backend/config/routes.rb b/backend/config/routes.rb
index 28a40ca..0153d12 100644
--- a/backend/config/routes.rb
+++ b/backend/config/routes.rb
@@ -121,6 +121,7 @@ Rails.application.routes.draw do
         post :regia_link
       end
     end
+    resources :stream_concurrency_violations, only: %i[index]
     resources :stream_nodes, only: %i[index create destroy] do
       member do
         post :drain
diff --git a/backend/db/migrate/20260831193000_create_stream_concurrency_violations.rb b/backend/db/migrate/20260831193000_create_stream_concurrency_violations.rb
new file mode 100644
index 0000000..949e0f0
--- /dev/null
+++ b/backend/db/migrate/20260831193000_create_stream_concurrency_violations.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+class CreateStreamConcurrencyViolations < ActiveRecord::Migration[7.2]
+  def change
+    create_table :stream_concurrency_violations, id: :uuid, default: -> { "gen_random_uuid()" } do |t|
+      t.references :user, type: :uuid, foreign_key: { on_delete: :nullify }
+      t.references :occupying_session, type: :uuid, foreign_key: { to_table: :stream_sessions, on_delete: :nullify }
+      t.references :attempted_session, type: :uuid, foreign_key: { to_table: :stream_sessions, on_delete: :nullify }
+      t.references :occupying_club, type: :uuid, foreign_key: { to_table: :clubs, on_delete: :nullify }
+      t.references :attempted_club, type: :uuid, foreign_key: { to_table: :clubs, on_delete: :nullify }
+
+      t.string :attempt_action, null: false, default: "start"
+      t.string :user_email, null: false
+      t.string :user_name
+      t.string :occupying_club_name
+      t.string :attempted_club_name
+      t.string :occupying_match_label, null: false
+      t.string :attempted_match_label, null: false
+      t.string :occupying_status
+      t.string :occupying_device
+      t.string :attempted_device
+      t.boolean :devices_differ, null: false, default: false
+      t.jsonb :metadata, null: false, default: {}
+
+      t.datetime :created_at, null: false
+    end
+
+    add_index :stream_concurrency_violations, :created_at
+    add_index :stream_concurrency_violations, :devices_differ
+    add_index :stream_sessions, %i[user_id status], name: "index_stream_sessions_on_user_id_and_status"
+  end
+end
diff --git a/backend/db/schema.rb b/backend/db/schema.rb
index 1ed6ecc..a606e00 100644
--- a/backend/db/schema.rb
+++ b/backend/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.2].define(version: 2026_08_28_180000) do
+ActiveRecord::Schema[7.2].define(version: 2026_08_31_193000) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pgcrypto"
   enable_extension "plpgsql"
@@ -383,6 +383,34 @@ ActiveRecord::Schema[7.2].define(version: 2026_08_28_180000) do
     t.index ["stream_session_id"], name: "index_score_states_on_stream_session_id", unique: true
   end
 
+  create_table "stream_concurrency_violations", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
+    t.uuid "user_id"
+    t.uuid "occupying_session_id"
+    t.uuid "attempted_session_id"
+    t.uuid "occupying_club_id"
+    t.uuid "attempted_club_id"
+    t.string "attempt_action", default: "start", null: false
+    t.string "user_email", null: false
+    t.string "user_name"
+    t.string "occupying_club_name"
+    t.string "attempted_club_name"
+    t.string "occupying_match_label", null: false
+    t.string "attempted_match_label", null: false
+    t.string "occupying_status"
+    t.string "occupying_device"
+    t.string "attempted_device"
+    t.boolean "devices_differ", default: false, null: false
+    t.jsonb "metadata", default: {}, null: false
+    t.datetime "created_at", null: false
+    t.index ["attempted_club_id"], name: "index_stream_concurrency_violations_on_attempted_club_id"
+    t.index ["attempted_session_id"], name: "index_stream_concurrency_violations_on_attempted_session_id"
+    t.index ["created_at"], name: "index_stream_concurrency_violations_on_created_at"
+    t.index ["devices_differ"], name: "index_stream_concurrency_violations_on_devices_differ"
+    t.index ["occupying_club_id"], name: "index_stream_concurrency_violations_on_occupying_club_id"
+    t.index ["occupying_session_id"], name: "index_stream_concurrency_violations_on_occupying_session_id"
+    t.index ["user_id"], name: "index_stream_concurrency_violations_on_user_id"
+  end
+
   create_table "stream_events", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
     t.uuid "stream_session_id", null: false
     t.string "event_type", null: false
@@ -440,9 +468,9 @@ ActiveRecord::Schema[7.2].define(version: 2026_08_28_180000) do
     t.datetime "updated_at", null: false
     t.string "regia_token_digest"
     t.datetime "regia_token_expires_at"
+    t.boolean "audio_muted", default: false, null: false
     t.uuid "stream_node_id"
     t.string "min_quality_preset", default: "auto", null: false
-    t.boolean "audio_muted", default: false, null: false
     t.string "client_os"
     t.string "app_version"
     t.string "app_build"
@@ -458,6 +486,7 @@ ActiveRecord::Schema[7.2].define(version: 2026_08_28_180000) do
     t.index ["regia_token_digest"], name: "index_stream_sessions_on_regia_token_digest", unique: true
     t.index ["status"], name: "index_stream_sessions_on_status"
     t.index ["stream_node_id"], name: "index_stream_sessions_on_stream_node_id"
+    t.index ["user_id", "status"], name: "index_stream_sessions_on_user_id_and_status"
     t.index ["user_id"], name: "index_stream_sessions_on_user_id"
   end
 
@@ -591,6 +620,11 @@ ActiveRecord::Schema[7.2].define(version: 2026_08_28_180000) do
   add_foreign_key "recordings", "stream_sessions"
   add_foreign_key "recordings", "teams"
   add_foreign_key "score_states", "stream_sessions"
+  add_foreign_key "stream_concurrency_violations", "clubs", column: "attempted_club_id", on_delete: :nullify
+  add_foreign_key "stream_concurrency_violations", "clubs", column: "occupying_club_id", on_delete: :nullify
+  add_foreign_key "stream_concurrency_violations", "stream_sessions", column: "attempted_session_id", on_delete: :nullify
+  add_foreign_key "stream_concurrency_violations", "stream_sessions", column: "occupying_session_id", on_delete: :nullify
+  add_foreign_key "stream_concurrency_violations", "users", on_delete: :nullify
   add_foreign_key "stream_events", "stream_sessions"
   add_foreign_key "stream_sessions", "matches"
   add_foreign_key "stream_sessions", "stream_nodes"
diff --git a/backend/db/seeds.rb b/backend/db/seeds.rb
index 403ae6c..cd2934b 100644
--- a/backend/db/seeds.rb
+++ b/backend/db/seeds.rb
@@ -16,7 +16,7 @@ admin = User.find_or_create_by!(email: "admin@matchlivetv.test") do |u|
   u.role = "admin"
 end
 
-club = Club.find_or_create_by!(name: "Tigers Volley") do |c|
+club = Club.find_or_create_by!(name: MatchLiveTv::Demo.home_team) do |c|
   c.sport = "volleyball"
   c.primary_color = "#e53935"
   c.secondary_color = "#ffffff"
@@ -24,7 +24,7 @@ end
 
 ClubMembership.find_or_create_by!(user: coach, club: club) { |m| m.role = "owner" }
 
-team = club.teams.find_or_create_by!(name: "Under 16") do |t|
+team = club.teams.find_or_create_by!(name: MatchLiveTv::Demo::CATEGORY) do |t|
   t.sport = "volleyball"
 end
 
@@ -32,12 +32,12 @@ UserTeam.find_or_create_by!(user: admin, team: team) { |ut| ut.role = "member" }
 
 Billing::AssignPlan.call(club: club, plan_slug: "free") unless club.subscription
 
-match = team.matches.find_or_create_by!(opponent_name: "ASD Eagles Pavia") do |m|
-  m.location = "PalaTigers - Milano"
+match = team.matches.find_or_create_by!(opponent_name: MatchLiveTv::Demo::AWAY_TEAM) do |m|
+  m.location = MatchLiveTv::Demo.venue
   m.scheduled_at = 2.hours.from_now
   m.sets_to_win = 3
   m.roster_numbers = [4, 6, 8, 9, 10, 11, 12, 14, 16, 17, 21]
-  m.category = "U16"
+  m.category = MatchLiveTv::Demo::CATEGORY
   m.phase = "Semifinale"
 end
 
diff --git a/backend/db/seeds/cost_analytics_demo.rb b/backend/db/seeds/cost_analytics_demo.rb
index 4da1ac5..d7badf7 100644
--- a/backend/db/seeds/cost_analytics_demo.rb
+++ b/backend/db/seeds/cost_analytics_demo.rb
@@ -12,11 +12,11 @@ coach = User.find_or_create_by!(email: "coach@matchlivetv.test") do |u|
 end
 
 clubs_data = [
-  { name: "Tigers Volley", sport: "volleyball", plan: "premium_full", sessions: 14, hours: 18.5, revenue_yearly: 19900 },
-  { name: "ASD Eagles Milano", sport: "volleyball", plan: "premium_light", sessions: 9, hours: 11.0, revenue_yearly: 5900 },
-  { name: "Volley Stars Roma", sport: "volleyball", plan: "premium_full", sessions: 6, hours: 8.0, revenue_yearly: 19900 },
-  { name: "Basket Juventus U18", sport: "basketball", plan: "premium_light", sessions: 4, hours: 5.5, revenue_yearly: 5900 },
-  { name: "Padova Beach", sport: "volleyball", plan: "free", sessions: 2, hours: 2.0, revenue_yearly: 0 }
+  { name: MatchLiveTv::Demo::HOME_TEAM, sport: "volleyball", plan: "premium_full", sessions: 14, hours: 18.5, revenue_yearly: 19900 },
+  { name: "Team MLTV Nord", sport: "volleyball", plan: "premium_light", sessions: 9, hours: 11.0, revenue_yearly: 5900 },
+  { name: "Team MLTV Sud", sport: "volleyball", plan: "premium_full", sessions: 6, hours: 8.0, revenue_yearly: 19900 },
+  { name: "Team MLTV Basket", sport: "basketball", plan: "premium_light", sessions: 4, hours: 5.5, revenue_yearly: 5900 },
+  { name: MatchLiveTv::Demo::AWAY_TEAM, sport: "volleyball", plan: "free", sessions: 2, hours: 2.0, revenue_yearly: 0 }
 ]
 
 sport_keys = {
@@ -81,7 +81,7 @@ clubs.each_with_index do |row, index|
     started = day.change(hour: 10 + (n % 6), min: 0)
     ended = started + secs.seconds
     match = team.matches.create!(
-      opponent_name: "Avversario demo #{n + 1}",
+      opponent_name: MatchLiveTv::Demo::AWAY_TEAM,
       sport_key: team.sport_key,
       scheduled_at: started
     )
diff --git a/backend/lib/match_live_tv/demo.rb b/backend/lib/match_live_tv/demo.rb
new file mode 100644
index 0000000..4fb698f
--- /dev/null
+++ b/backend/lib/match_live_tv/demo.rb
@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+module MatchLiveTv
+  # Set demo ufficiale per mockup, preview e contenuti dimostrativi del sito.
+  # Nomi fittizi, chiaramente riconducibili a MatchLiveTV — mai società o sponsor reali.
+  module Demo
+    HOME_TEAM = "Team MLTV"
+    AWAY_TEAM = "Team Guest"
+    CATEGORY = "U15 MASCHILE"
+    VENUE = "Pala MLTV"
+
+    module_function
+
+    def home_team
+      HOME_TEAM
+    end
+
+    def away_team
+      I18n.t("demo.away_team", default: AWAY_TEAM)
+    end
+
+    def category
+      CATEGORY
+    end
+
+    def when_label
+      I18n.t("demo.when")
+    end
+
+    def venue
+      VENUE
+    end
+
+    def match_title
+      "#{home_team} vs #{away_team}"
+    end
+
+    def live_meta
+      "#{VENUE} · Match Live TV"
+    end
+  end
+end
diff --git a/backend/public/admin.css b/backend/public/admin.css
index 18e96a4..f214752 100644
--- a/backend/public/admin.css
+++ b/backend/public/admin.css
@@ -236,6 +236,11 @@ body.admin-body {
 .badge--ingest-cloud { background: #e65100; color: #fff3e0; }
 .badge--ended { background: #37474f; color: #eceff1; }
 .badge--error { background: #b71c1c; color: #ffebee; }
+.badge--abuse { background: #b71c1c; color: #ffebee; }
+
+.admin-table tr.admin-row--two-devices td {
+  background: rgba(183, 28, 28, 0.12);
+}
 
 .admin-ingest {
   display: inline-flex;
diff --git a/backend/public/marketing.css b/backend/public/marketing.css
index 156da1c..e0c3aba 100644
--- a/backend/public/marketing.css
+++ b/backend/public/marketing.css
@@ -3713,6 +3713,273 @@ a.replay-archive__thumb:hover {
   }
 }
 
+.feature-card__badge--gold {
+  background: rgba(255, 183, 77, 0.12);
+  color: #ffb74d;
+}
+
+.sponsor-cover { padding-top: 8px; }
+.sponsor-cover.section { padding-top: 28px; padding-bottom: 28px; }
+.sponsor-cover--compact.section { padding-top: 16px; padding-bottom: 8px; }
+.sponsor-cover__panel {
+  display: grid;
+  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.95fr);
+  gap: 32px;
+  align-items: center;
+  background: #14141c;
+  border: 1px solid #5a2a2e;
+  border-radius: 14px;
+  padding: 32px 28px;
+  box-shadow: 0 0 0 1px rgba(229, 57, 53, 0.18), 0 12px 32px rgba(0, 0, 0, 0.28);
+}
+.sponsor-cover--compact .sponsor-cover__panel {
+  padding: 24px 22px;
+  gap: 24px;
+  box-shadow: 0 0 0 1px rgba(229, 57, 53, 0.12);
+}
+.sponsor-cover__copy { min-width: 0; }
+.sponsor-cover__copy .feature-card__badge { margin-bottom: 12px; }
+.sponsor-cover__copy h2 {
+  text-align: left;
+  margin: 0 0 12px;
+  font-size: 1.7rem;
+  line-height: 1.2;
+}
+.sponsor-cover--compact .sponsor-cover__copy h2 { font-size: 1.4rem; }
+.sponsor-cover__lead {
+  margin: 0 0 16px;
+  color: #bbb;
+  line-height: 1.6;
+  max-width: 36rem;
+}
+.sponsor-cover--compact .sponsor-cover__lead { margin-bottom: 18px; }
+.sponsor-cover__copy .features-checklist { margin-bottom: 14px; }
+.sponsor-cover__claim {
+  margin: 0 0 18px;
+  color: #ffb74d;
+  font-size: 0.92rem;
+  font-weight: 700;
+  letter-spacing: 0.01em;
+  line-height: 1.4;
+}
+.sponsor-cover__visual {
+  display: flex;
+  justify-content: center;
+  min-width: 0;
+}
+.cover-mock {
+  width: min(100%, 380px);
+  margin: 0;
+  background: #101016;
+  border: 1px solid #2f2f3c;
+  border-radius: 14px;
+  overflow: hidden;
+  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
+}
+.sponsor-cover--compact .cover-mock { width: min(100%, 320px); }
+.cover-mock__chrome {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 10px;
+  padding: 10px 14px;
+  border-bottom: 1px solid #2a2a36;
+  background: #16161e;
+}
+.cover-mock__brand {
+  font-size: 0.72rem;
+  font-weight: 800;
+  letter-spacing: 0.08em;
+  color: #fff;
+}
+.cover-mock__brand em {
+  font-style: normal;
+  color: #e53935;
+}
+.cover-mock__state {
+  flex-shrink: 0;
+  padding: 3px 8px;
+  border-radius: 4px;
+  background: rgba(255, 183, 77, 0.14);
+  color: #ffb74d;
+  font-size: 0.62rem;
+  font-weight: 800;
+  letter-spacing: 0.08em;
+}
+.cover-mock__stage {
+  padding: 16px 16px 14px;
+  background:
+    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(229, 57, 53, 0.16), transparent 60%),
+    #101016;
+  text-align: center;
+}
+.cover-mock__cat {
+  margin: 0 0 8px;
+  color: #9a9aaa;
+  font-size: 0.68rem;
+  font-weight: 700;
+  letter-spacing: 0.12em;
+  text-transform: uppercase;
+}
+.cover-mock__home,
+.cover-mock__away {
+  margin: 0;
+  font-size: 1.05rem;
+  font-weight: 800;
+  line-height: 1.2;
+  color: #fff;
+}
+.sponsor-cover--compact .cover-mock__home,
+.sponsor-cover--compact .cover-mock__away { font-size: 0.92rem; }
+.cover-mock__vs {
+  margin: 4px 0;
+  color: #e53935;
+  font-size: 0.72rem;
+  font-weight: 800;
+  letter-spacing: 0.14em;
+  text-transform: uppercase;
+}
+.cover-mock__when {
+  margin: 8px 0 10px;
+  color: #888;
+  font-size: 0.75rem;
+}
+.cover-mock__art-label {
+  margin: 0 0 8px;
+  color: #8e8e9a;
+  font-size: 0.62rem;
+  font-weight: 700;
+  letter-spacing: 0.1em;
+  text-transform: uppercase;
+}
+.cover-mock__art {
+  position: relative;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  min-height: 168px;
+  margin-bottom: 12px;
+  padding: 22px 16px 16px;
+  border-radius: 10px;
+  background:
+    linear-gradient(155deg, rgba(229, 57, 53, 0.22) 0%, transparent 38%),
+    linear-gradient(180deg, #1c1418 0%, #121218 55%, #0e0e14 100%);
+  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
+}
+.cover-mock__art::before {
+  content: "";
+  position: absolute;
+  top: -24%;
+  right: -18%;
+  width: 58%;
+  height: 90%;
+  background: linear-gradient(135deg, rgba(229, 57, 53, 0.28), transparent 70%);
+  transform: rotate(18deg);
+  pointer-events: none;
+}
+.sponsor-cover--compact .cover-mock__art {
+  min-height: 132px;
+  padding: 16px 14px 14px;
+}
+.cover-mock__crest {
+  position: relative;
+  z-index: 1;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 8px;
+}
+.cover-mock__crest-mark {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 44px;
+  height: 44px;
+  border-radius: 12px;
+  background: linear-gradient(180deg, #e53935, #b71c1c);
+  color: #fff;
+  font-size: 1.15rem;
+  font-weight: 800;
+  letter-spacing: 0.02em;
+  box-shadow: 0 8px 18px rgba(229, 57, 53, 0.28);
+}
+.sponsor-cover--compact .cover-mock__crest-mark {
+  width: 36px;
+  height: 36px;
+  font-size: 1rem;
+  border-radius: 10px;
+}
+.cover-mock__crest-name {
+  color: #fff;
+  font-size: 0.78rem;
+  font-weight: 800;
+  letter-spacing: 0.14em;
+  text-transform: uppercase;
+}
+.cover-mock__marks {
+  position: relative;
+  z-index: 1;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 10px;
+  margin-top: 18px;
+}
+.cover-mock__mark {
+  display: block;
+  height: 18px;
+  border-radius: 4px;
+  opacity: 0.72;
+}
+.cover-mock__mark--a {
+  width: 46px;
+  background: linear-gradient(90deg, #c9a227, #f0d78c);
+}
+.cover-mock__mark--b {
+  width: 34px;
+  height: 18px;
+  border-radius: 50%;
+  background: #d7d7e0;
+}
+.cover-mock__mark--c {
+  width: 40px;
+  background: #8aa4c8;
+}
+.cover-mock__soon {
+  margin: 0;
+  color: #888;
+  font-size: 0.72rem;
+  font-style: italic;
+}
+
+@media (max-width: 999px) {
+  .sponsor-cover__panel {
+    grid-template-columns: 1fr;
+    text-align: center;
+    padding: 24px 20px;
+  }
+  .sponsor-cover__copy .feature-card__badge { align-self: center; }
+  .sponsor-cover__copy {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+  }
+  .sponsor-cover__copy h2 { text-align: center; }
+  .sponsor-cover__lead { margin-left: auto; margin-right: auto; }
+  .sponsor-cover__copy .features-checklist { text-align: left; width: 100%; max-width: 28rem; }
+  .cover-mock { width: min(100%, 360px); }
+}
+
+@media (max-width: 640px) {
+  .sponsor-cover__panel { padding: 20px 16px; }
+  .sponsor-cover__copy h2 { font-size: 1.35rem; }
+  .cover-mock__home,
+  .cover-mock__away { font-size: 0.95rem; }
+  .cover-mock__art { min-height: 148px; }
+}
+
 .mltv-preview-badge {
   position: fixed;
   bottom: 16px;
diff --git a/backend/spec/lib/match_live_tv/demo_spec.rb b/backend/spec/lib/match_live_tv/demo_spec.rb
new file mode 100644
index 0000000..a50375f
--- /dev/null
+++ b/backend/spec/lib/match_live_tv/demo_spec.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe MatchLiveTv::Demo do
+  it "usa Team MLTV come squadra demo ufficiale" do
+    expect(described_class.home_team).to eq("Team MLTV")
+    expect(described_class.category).to eq("U15 MASCHILE")
+    expect(described_class.venue).to eq("Pala MLTV")
+  end
+
+  it "localizza l'avversario senza nomi di società reali" do
+    I18n.with_locale(:it) do
+      expect(described_class.away_team).to eq("Squadra ospite")
+      expect(described_class.match_title).to eq("Team MLTV vs Squadra ospite")
+    end
+    I18n.with_locale(:en) do
+      expect(described_class.away_team).to eq("Team Guest")
+      expect(described_class.match_title).to eq("Team MLTV vs Team Guest")
+    end
+  end
+end
diff --git a/backend/spec/requests/admin/stream_concurrency_violations_spec.rb b/backend/spec/requests/admin/stream_concurrency_violations_spec.rb
new file mode 100644
index 0000000..30c2de3
--- /dev/null
+++ b/backend/spec/requests/admin/stream_concurrency_violations_spec.rb
@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe "Admin stream concurrency violations", type: :request do
+  let!(:admin) { AdminAccount.create!(username: "ops-abuse", password: "Password123") }
+  let!(:user) { User.create!(email: "abuse@test.it", name: "Abuser", password: "Password123", role: "coach") }
+  let!(:club) { Club.create!(name: "Abuse Club", sport: "volleyball") }
+  let!(:team) { club.teams.create!(name: "U16", sport: "volleyball") }
+  let!(:match_a) { team.matches.create!(opponent_name: "Rival A", sport: "volleyball") }
+  let!(:match_b) { team.matches.create!(opponent_name: "Rival B", sport: "volleyball") }
+  let!(:live) do
+    StreamSession.create!(match: match_a, user: user, platform: "matchlivetv", status: "live")
+  end
+  let!(:idle) do
+    StreamSession.create!(match: match_b, user: user, platform: "matchlivetv", status: "idle")
+  end
+  let!(:violation) do
+    StreamConcurrencyViolation.record!(attempted: idle, occupying: live, action: "start")
+  end
+
+  before do
+    post admin_login_path, params: { username: admin.username, password: "Password123" }
+  end
+
+  it "mostra l'elenco abusi" do
+    get admin_stream_concurrency_violations_path
+    expect(response).to have_http_status(:ok)
+    expect(response.body).to include("abuse@test.it")
+    expect(response.body).to include("Abuse Club")
+    expect(response.body).to include("Rival A")
+    expect(response.body).to include("Rival B")
+  end
+
+  it "mostra il badge in dashboard" do
+    get admin_root_path
+    expect(response).to have_http_status(:ok)
+    expect(response.body).to include("abuse@test.it")
+  end
+
+  it "mostra i tentativi nella scheda società" do
+    get admin_club_path(club)
+    expect(response).to have_http_status(:ok)
+    expect(response.body).to include("abuse@test.it")
+    expect(response.body).to include("Rival B")
+  end
+end
diff --git a/backend/spec/requests/api/v1/stream_sessions_user_concurrent_spec.rb b/backend/spec/requests/api/v1/stream_sessions_user_concurrent_spec.rb
new file mode 100644
index 0000000..0f80dd5
--- /dev/null
+++ b/backend/spec/requests/api/v1/stream_sessions_user_concurrent_spec.rb
@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe "API start seconda diretta stesso account", type: :request do
+  let!(:user) { User.create!(email: "conc@test.it", name: "C", password: "Password123", role: "coach") }
+  let!(:club) { Club.create!(name: "Conc Club", sport: "volleyball") }
+  let!(:membership) { club.club_memberships.create!(user: user, role: "owner") }
+  let!(:team) { club.teams.create!(name: "Tigers", sport: "volleyball") }
+  let!(:match_a) { team.matches.create!(opponent_name: "A", sport: "volleyball") }
+  let!(:match_b) { team.matches.create!(opponent_name: "B", sport: "volleyball") }
+  let!(:live) do
+    StreamSession.create!(
+      match: match_a,
+      user: user,
+      platform: "matchlivetv",
+      status: "live",
+      started_at: 5.minutes.ago,
+      device_model: "Pixel 8",
+      client_os: "android"
+    )
+  end
+  let!(:idle) do
+    StreamSession.create!(
+      match: match_b,
+      user: user,
+      platform: "matchlivetv",
+      status: "idle",
+      device_model: "iPhone 15",
+      client_os: "ios"
+    )
+  end
+
+  def auth_headers
+    post "/api/v1/auth/login", params: { email: user.email, password: "Password123" }
+    token = response.parsed_body["access_token"]
+    { "Authorization" => "Bearer #{token}", "Content-Type" => "application/json" }
+  end
+
+  before do
+    plan = Plan.find_or_initialize_by(slug: "premium_full")
+    plan.name ||= "Premium Full"
+    plan.features = (plan.features || {}).merge(
+      "platforms" => %w[matchlivetv],
+      "concurrent_streams_limit" => 10
+    )
+    plan.save!
+    club.create_subscription!(plan: plan, status: "active") if club.subscription.blank?
+    allow(SessionChannel).to receive(:broadcast_message)
+  end
+
+  it "restituisce 403 user_concurrent_stream e salva l'evidenza" do
+    patch "/api/v1/sessions/#{idle.id}/start", headers: auth_headers
+
+    expect(response).to have_http_status(:forbidden)
+    body = response.parsed_body
+    expect(body["error_code"]).to eq("user_concurrent_stream")
+    expect(body["error"]).to be_present
+    expect(StreamConcurrencyViolation.where(attempted_session_id: idle.id, occupying_session_id: live.id)).to exist
+  end
+end
diff --git a/backend/spec/requests/public/features_page_spec.rb b/backend/spec/requests/public/features_page_spec.rb
index 02e8d66..d22d72f 100644
--- a/backend/spec/requests/public/features_page_spec.rb
+++ b/backend/spec/requests/public/features_page_spec.rb
@@ -16,7 +16,17 @@ RSpec.describe "Public features page", type: :request do
     expect(response.body).to include("Chi filma, filma")
     expect(response.body).to include("Accesso con link")
     expect(response.body).to include("La diretta resta della tua società")
-    expect(response.body).to include("La partita finisce. Il ricordo resta.")
+    expect(response.body).to include("Dai visibilità ai tuoi sponsor")
+    expect(response.body).to include("Copertina caricata per ogni partita")
+    expect(response.body).to include("Scopri Premium Full")
+    expect(response.body).to include("Team MLTV")
+    expect(response.body).to include("Squadra ospite")
+    expect(response.body).to include("Copertina personalizzata")
+    expect(response.body).not_to include("Lupi Santa Croce")
+    expect(response.body).not_to include("Rossi vs Neri")
+    expect(response.body).not_to include("Tigers Volley")
+    expect(response.body).not_to include("MAIN SPONSOR")
+    expect(response.body).not_to include("CON IL SUPPORTO DI")
     expect(response.body).to include("Inizia gratis")
     expect(response.body).to include("Confronta i piani")
     expect(response.body).to include(public_signup_path)
diff --git a/backend/spec/requests/public/home_page_spec.rb b/backend/spec/requests/public/home_page_spec.rb
index a891f82..f43b0a0 100644
--- a/backend/spec/requests/public/home_page_spec.rb
+++ b/backend/spec/requests/public/home_page_spec.rb
@@ -10,6 +10,10 @@ RSpec.describe "Public home page", type: :request do
     expect(response.body).to include(I18n.t("home.stores_label", locale: :it))
     expect(response.body).to include(I18n.t("home.store_app_store_name", locale: :it))
     expect(response.body).to include(I18n.t("home.store_play_name", locale: :it))
+    expect(response.body).to include("Dai visibilità ai tuoi sponsor")
+    expect(response.body).to include("Team MLTV")
+    expect(response.body).not_to include("Lupi Santa Croce")
+    expect(response.body).to include("Scopri Premium Full")
     expect(response.body.scan(MatchLiveTv.app_store_url).size).to eq(3)
     expect(response.body.scan(MatchLiveTv.play_store_url).size).to eq(3)
   end
diff --git a/backend/spec/requests/public/pricing_page_spec.rb b/backend/spec/requests/public/pricing_page_spec.rb
index 4b1a1c8..457c9f7 100644
--- a/backend/spec/requests/public/pricing_page_spec.rb
+++ b/backend/spec/requests/public/pricing_page_spec.rb
@@ -26,6 +26,14 @@ RSpec.describe "Public pricing page", type: :request do
     expect(response.body).to include("Account trasmettitori")
     expect(response.body).to include("Niente password condivise")
     expect(response.body).to include("plan-card--featured")
+    expect(response.body).to include("Copertina personalizzabile")
+    expect(response.body).to include("con sponsor")
+    expect(response.body).to include("Copertina personalizzata")
+    expect(response.body).to include("Dai visibilità ai tuoi sponsor")
+    expect(response.body).to include("Team MLTV")
+    expect(response.body).not_to include("Lupi Santa Croce")
+    expect(response.body).not_to include("MAIN SPONSOR")
+    expect(response.body).not_to include("CON IL SUPPORTO DI")
     expect(response.body).to include("Soddisfatti o rimborsati")
     expect(response.body).to include("30 giorni soddisfatti o rimborsati")
     expect(response.body).to include("ti rimborsiamo il 100%")
diff --git a/backend/spec/requests/public/team_pages_spec.rb b/backend/spec/requests/public/team_pages_spec.rb
index 4a771f0..390ee5d 100644
--- a/backend/spec/requests/public/team_pages_spec.rb
+++ b/backend/spec/requests/public/team_pages_spec.rb
@@ -1,12 +1,12 @@
 require "rails_helper"
 
 RSpec.describe "Public team page", type: :request do
-  let(:club) { Club.create!(name: "ASD Eagles", sport: "volleyball", primary_color: "#e53935", secondary_color: "#ffffff") }
+  let(:club) { Club.create!(name: "Team MLTV", sport: "volleyball", primary_color: "#e53935", secondary_color: "#ffffff") }
   let!(:team) do
     club.teams.create!(
-      name: "Tigers Volley U17",
+      name: "Team MLTV U15",
       sport_key: "pallavolo",
-      description: "Squadra giovanile under 17.",
+      description: "Squadra giovanile under 15.",
       roster_public: true
     )
   end
@@ -15,9 +15,9 @@ RSpec.describe "Public team page", type: :request do
     get public_team_page_path(team.slug)
 
     expect(response).to have_http_status(:ok)
-    expect(response.body).to include("Tigers Volley U17")
-    expect(response.body).to include("ASD Eagles")
-    expect(response.body).to include("Squadra giovanile under 17")
+    expect(response.body).to include("Team MLTV U15")
+    expect(response.body).to include("Team MLTV")
+    expect(response.body).to include("Squadra giovanile under 15")
   end
 
   it "restituisce 404 per slug inesistente" do
@@ -41,13 +41,13 @@ RSpec.describe "Public team page", type: :request do
 end
 
 RSpec.describe "Public team directory", type: :request do
-  let(:club) { Club.create!(name: "ASD Eagles", sport: "volleyball", primary_color: "#e53935", secondary_color: "#ffffff") }
+  let(:club) { Club.create!(name: "Team MLTV", sport: "volleyball", primary_color: "#e53935", secondary_color: "#ffffff") }
   let(:user) { User.create!(email: "dir2@test.com", name: "Coach", password: "Password123", role: "coach") }
-  let!(:team) { club.teams.create!(name: "Tigers Volley U17", sport_key: "pallavolo") }
+  let!(:team) { club.teams.create!(name: "Team MLTV U15", sport_key: "pallavolo") }
 
   before do
     club.club_memberships.create!(user: user, role: "owner")
-    match = team.matches.create!(opponent_name: "Rival", sport_key: "pallavolo", scheduled_at: 1.day.from_now)
+    match = team.matches.create!(opponent_name: MatchLiveTv::Demo::AWAY_TEAM, sport_key: "pallavolo", scheduled_at: 1.day.from_now)
     StreamSession.create!(
       match: match, user: user, status: "live", platform: "matchlivetv",
       privacy_status: "public", publish_token: "tok-dir", started_at: Time.current
@@ -58,13 +58,13 @@ RSpec.describe "Public team directory", type: :request do
     get public_team_pages_path
 
     expect(response).to have_http_status(:ok)
-    expect(response.body).to include("Tigers Volley U17")
+    expect(response.body).to include("Team MLTV U15")
     expect(response.body).to include("In diretta")
   end
 
   it "filtra per sport via query string" do
     get public_team_pages_path(sport: "basket")
 
-    expect(response.body).not_to include("Tigers Volley U17")
+    expect(response.body).not_to include("Team MLTV U15")
   end
 end
diff --git a/backend/spec/services/sessions/start_user_concurrent_spec.rb b/backend/spec/services/sessions/start_user_concurrent_spec.rb
new file mode 100644
index 0000000..c3f1978
--- /dev/null
+++ b/backend/spec/services/sessions/start_user_concurrent_spec.rb
@@ -0,0 +1,99 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe Sessions::Start, "one live per user" do
+  let(:user) { User.create!(email: "tx@test.it", name: "Tx", password: "Password123", role: "coach") }
+  let(:club) { Club.create!(name: "Club A", sport: "volleyball") }
+  let(:team) { club.teams.create!(name: "Team A", sport: "volleyball") }
+  let(:match_a) { team.matches.create!(opponent_name: "Opp A", sport: "volleyball") }
+  let(:match_b) { team.matches.create!(opponent_name: "Opp B", sport: "volleyball") }
+
+  before do
+    club.club_memberships.create!(user: user, role: "owner")
+    plan = Plan.find_or_initialize_by(slug: "premium_full")
+    plan.name ||= "Premium Full"
+    plan.features = (plan.features || {}).merge(
+      "platforms" => %w[matchlivetv youtube],
+      "concurrent_streams_limit" => 10
+    )
+    plan.save!
+    club.create_subscription!(plan: plan, status: "active") if club.subscription.blank?
+    allow(SessionChannel).to receive(:broadcast_message)
+  end
+
+  def session_for(match, status:, device_model: "Pixel 8")
+    StreamSession.create!(
+      match: match,
+      user: user,
+      platform: "matchlivetv",
+      status: status,
+      device_manufacturer: "Google",
+      device_model: device_model,
+      client_os: "android"
+    )
+  end
+
+  it "avvia la prima diretta" do
+    session = session_for(match_a, status: "idle")
+    described_class.new(session).call
+    expect(session.reload.status).to eq("connecting")
+    expect(StreamConcurrencyViolation.count).to eq(0)
+  end
+
+  it "blocca la seconda diretta dello stesso account e registra l'abuso" do
+    live = session_for(match_a, status: "live", device_model: "Pixel 8")
+    live.update!(started_at: 10.minutes.ago)
+    second = session_for(match_b, status: "idle", device_model: "iPhone 15")
+    second.update!(client_os: "ios", device_manufacturer: "Apple")
+
+    expect {
+      described_class.new(second).call
+    }.to raise_error(Teams::EntitlementError) { |e|
+      expect(e.code).to eq("user_concurrent_stream")
+    }
+
+    expect(second.reload.status).to eq("idle")
+    violation = StreamConcurrencyViolation.last
+    expect(violation).to be_present
+    expect(violation.user_email).to eq(user.email)
+    expect(violation.occupying_session_id).to eq(live.id)
+    expect(violation.attempted_session_id).to eq(second.id)
+    expect(violation.devices_differ).to be(true)
+    expect(violation.attempt_action).to eq("start")
+  end
+
+  it "non blocca un secondo account sulla stessa società" do
+    other = User.create!(email: "tx2@test.it", name: "Tx2", password: "Password123", role: "coach")
+    club.club_memberships.create!(user: other, role: "owner")
+    session_for(match_a, status: "live")
+    other_session = StreamSession.create!(
+      match: match_b,
+      user: other,
+      platform: "matchlivetv",
+      status: "idle"
+    )
+
+    described_class.new(other_session).call
+    expect(other_session.reload.status).to eq("connecting")
+  end
+
+  it "considera occupante anche una sessione in pausa" do
+    session_for(match_a, status: "paused")
+    second = session_for(match_b, status: "idle")
+
+    expect {
+      described_class.new(second).call
+    }.to raise_error(Teams::EntitlementError) { |e|
+      expect(e.code).to eq("user_concurrent_stream")
+    }
+  end
+
+  it "non considera occupante una sessione idle" do
+    session_for(match_a, status: "idle")
+    second = session_for(match_b, status: "idle")
+
+    described_class.new(second).call
+    expect(second.reload.status).to eq("connecting")
+  end
+end
diff --git a/backend/spec/services/teams/generate_slug_spec.rb b/backend/spec/services/teams/generate_slug_spec.rb
index 90053c8..23d95b4 100644
--- a/backend/spec/services/teams/generate_slug_spec.rb
+++ b/backend/spec/services/teams/generate_slug_spec.rb
@@ -4,13 +4,13 @@ RSpec.describe Teams::GenerateSlug do
   let(:club) { Club.create!(name: "Test Club", sport: "volleyball", primary_color: "#e53935", secondary_color: "#ffffff") }
 
   it "genera uno slug dal nome" do
-    team = club.teams.build(name: "Crazy Volley U17B", sport_key: "pallavolo")
-    expect(described_class.call(team)).to eq("crazy-volley-u17b")
+    team = club.teams.build(name: "Team MLTV U15", sport_key: "pallavolo")
+    expect(described_class.call(team)).to eq("team-mltv-u15")
   end
 
   it "aggiunge un suffisso se lo slug esiste già" do
-    club.teams.create!(name: "Tigers", sport_key: "pallavolo")
-    team = club.teams.build(name: "Tigers", sport_key: "pallavolo")
-    expect(described_class.call(team)).to eq("tigers-2")
+    club.teams.create!(name: "Team MLTV", sport_key: "pallavolo")
+    team = club.teams.build(name: "Team MLTV", sport_key: "pallavolo")
+    expect(described_class.call(team)).to eq("team-mltv-2")
   end
 end
diff --git a/native/android/app/src/main/kotlin/com/matchlivetv/match_live_tv/data/repository/SessionRepository.kt b/native/android/app/src/main/kotlin/com/matchlivetv/match_live_tv/data/repository/SessionRepository.kt
index 06620c5..83ce296 100644
--- a/native/android/app/src/main/kotlin/com/matchlivetv/match_live_tv/data/repository/SessionRepository.kt
+++ b/native/android/app/src/main/kotlin/com/matchlivetv/match_live_tv/data/repository/SessionRepository.kt
@@ -14,6 +14,8 @@ import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
 import kotlinx.coroutines.delay
 import retrofit2.HttpException
 
+class SessionApiException(message: String, cause: Throwable) : Exception(message, cause)
+
 class SessionRepository(
     private val api: MatchLiveApi,
     private val appContext: Context,
@@ -54,17 +56,15 @@ class SessionRepository(
         }
     }
 
-    private fun parseErrorCode(error: HttpException): String? {
-        val body = error.response()?.errorBody()?.string().orEmpty()
-        if (body.isBlank()) return null
-        return runCatching { errorAdapter.fromJson(body)?.errorCode }.getOrNull()
-    }
-
     suspend fun fetchSession(sessionId: String): StreamSession =
         api.session(sessionId).toDomain()
 
     suspend fun startSession(sessionId: String): StreamSession =
-        api.startSession(sessionId).toDomain()
+        try {
+            api.startSession(sessionId).toDomain()
+        } catch (e: HttpException) {
+            throw SessionApiException(parseErrorMessage(e), e)
+        }
 
     suspend fun stopSession(sessionId: String): StreamSession =
         api.stopSession(sessionId).toDomain()
@@ -73,7 +73,11 @@ class SessionRepository(
         api.pauseSession(sessionId).toDomain()
 
     suspend fun resumeSession(sessionId: String): StreamSession =
-        api.resumeSession(sessionId).toDomain()
+        try {
+            api.resumeSession(sessionId).toDomain()
+        } catch (e: HttpException) {
+            throw SessionApiException(parseErrorMessage(e), e)
+        }
 
     suspend fun setAudioMute(sessionId: String, muted: Boolean): StreamSession =
         api.setAudioMute(sessionId, com.matchlivetv.match_live_tv.data.api.AudioMuteRequest(muted)).toDomain()
@@ -121,4 +125,19 @@ class SessionRepository(
             ),
         )
     }
+
+    private fun parseErrorCode(error: HttpException): String? {
+        return parseError(error)?.errorCode
+    }
+
+    private fun parseErrorMessage(error: HttpException): String {
+        val parsed = parseError(error)
+        return parsed?.error?.takeIf { it.isNotBlank() } ?: error.message() ?: "HTTP ${error.code()}"
+    }
+
+    private fun parseError(error: HttpException): ApiErrorResponse? {
+        val body = error.response()?.errorBody()?.string().orEmpty()
+        if (body.isBlank()) return null
+        return runCatching { errorAdapter.fromJson(body) }.getOrNull()
+    }
 }
diff --git a/native/ios/MatchLiveTvTests/MatchScoringRulesTests.swift b/native/ios/MatchLiveTvTests/MatchScoringRulesTests.swift
index 6703133..498001b 100644
--- a/native/ios/MatchLiveTvTests/MatchScoringRulesTests.swift
+++ b/native/ios/MatchLiveTvTests/MatchScoringRulesTests.swift
@@ -6,8 +6,8 @@ final class MatchScoringRulesTests: XCTestCase {
         Match(
             id: "match-1",
             teamId: "team-1",
-            teamName: "Tigers Volley",
-            opponentName: "Avversario",
+            teamName: "Team MLTV",
+            opponentName: "Team Guest",
             location: nil,
             scheduledAt: nil,
             sportKey: "pallavolo",