Unable to Connect to EA FC 26 Online Features

I'm writing to let you know that my EA Sports FC 26 connection is still having problems. I have a reliable high-speed internet connection (UniFi 900 Mbps), but I can't log in or use any of the online aspects of the game. I've previously reset my router, but the notice keeps appearing on the screen.
Given that I have been a devoted player of EA Sports football games for over nine years, I am really saddened by this issue. Although I have always loved the game, my entire experience and pleasure have been impacted by this ongoing connection problem.