EA FIFA 21 servers are currently down. Since the release, many players are experiencing several issues with the game. Out of those affected, some are experiencing login issues. You can check Fifa 21 server status details here.
Update – EA and DICE community leader confirmed the issue, saying that teams are working on rectifying the problem. EA’s help services are slammed due to the outage.
The company’s customer support representatives may not be reachable at the moment. Match creation has been temporarily disabled to prevent disconnects during this time.
Also, you can read recently released official Fifa 21 patch notes here.