Since the release of EA FC 26, the connection to EA servers has been established successfully, but it disconnects after 30–60 seconds or when trying to create a game session in Rivals or Rush. When a "specific server" is successfully connected, the player search starts, but the server disconnects at the beginning of the match, usually within 5-10 minutes.
I contacted my Internet provider, and they confirmed that the signal reaches the servers correctly and that the issue is not on their side.
Everything works when connected through a VPN or a mobile hotspot, but in that case, there is a high ping and frequent disconnections during matches.
Internet - ER-Telecom Ethernet
