You log in on your phone. You log in on your TV. You change your password on your phone. Your TV stays logged in with the old password.
A British IPTV reseller with proper session management invalidates old sessions when you change credentials. A British IPTV provider with poor session sync leaves old sessions active indefinitely.
Here's the security risk: if you change your password because your account was compromised, old sessions should die immediately. The IPTV reseller UK who implements session invalidation (via token expiry or active session killing) protects you. One who doesn't leaves backdoors open.
In most cases, what actually works is changing your password during trial. Then try to use the old session on another device. If it still works, session invalidation is broken. If you're prompted to log in again, it works.
Scenario: you suspect your account is shared. You change your password. On a good service, all other devices are logged out immediately. On a bad service, the person using your old credentials keeps watching for days.
I've watched an IPTV reseller UK implement proper session invalidation. Customers could kill all active sessions with a password change. Security improved. Trust increased.
Honestly, test session invalidation. A British IPTV reseller who kills old sessions on password change respects your security. One that doesn't leaves you exposed.
A British IPTV reseller who syncs session state across devices respects that a password change should mean a fresh start everywhere.