Constant Ultimate Team Server Disconnections / Menu Kicks on PC (FC 27)

I am experiencing a persistent server disconnection loop in EA SPORTS FC 27 on PC that is making the game completely unplayable. I purchased the game for £60 and have been unable to play a single match without being disconnected.

My Specific Symptoms:

1. I can load into Ultimate Team, but I am automatically disconnected and kicked back to the main menu after roughly 60 seconds of browsing.

2. If I try to load into a game mode like Rush, it allows me to select a player, but the exact millisecond it attempts to matchmake or transition to a lobby, I get an "Unable to connect to servers" error.

3. When I tried logging in via a web browser to reset my team profile, I received an error stating that I am "Signed into another device," meaning my last PC session is completely ghosted and stuck on your backend servers [1.1.1, 1.14].

4. I am also completely unable to load into Squad Battles matches.

Troubleshooting Already Completed (Local PC is Perfect):

I have spent hours troubleshooting my system to rule out local issues. I have already completed the following steps:

• Performed a clean installation of the latest NVIDIA Game Ready graphics drivers via the NVIDIA App.

• Executed a full Windows Network Reset to completely reinstall my network card and flush the DNS stack.

• Disabled Windows network power-saving settings and modified Wi-Fi roaming parameters to force connection stability.

• Manually updated my Windows Defender Firewall settings via the Control Panel to ensure both EA SPORTS FC 27 and EAAntiCheat have full Private and Public access permissions.

• Verified that my wired PS5 DualSense controller is running cleanly on a single USB cable with Steam completely shut down in the Task Manager to prevent any dual-input anti-cheat false flags.

• Wiped the EA App local cache files using the App Recovery tool.

Because my PC hardware, firewall, and local network are entirely clean and fully updated, this is clearly an automated account-sync bug, an anti-cheat desync, or a temporary match soft-ban stuck on your backend server database.

Please review my EA account profile, clear any stuck ghost login sessions [1.1.1, 1.14], and reset my profile's server-side matchmaking state so I can finally play the game I paid for.