Unable to connect to ea server

fc25 can now log in. I can still play without any problems. So there is nothing wrong with my internet connection.
However, fc26 cannot connect to ea Server. That's why I can't access ut. On the first screen, you will see that your online connection has been lost. As discussed at the beginning, fc25 can be connected. Why? Please tell me how to solve this problem. Only fc26 cannot connect to ea server. Join eaplay. The Ultimate Edition has been purchased.