Getting kicked out of Ultimate Team

In my last 4 or 5 UT Champions games I have been kicked out of Ultimate Team during the game 3 or 4 times and also after the game in the loading screen once. This issue has affected my Champions progress, giving me losses when I was winning the game or I could have won it. I have tried playing other game modes such as Spirit of Africa League and I haven't had this issue. I have also checked my internet connection and everything was good with it so i assume it is a problem with the game/servers. I would much appreciate a response and also if needed a solution to my problem.

Thanks!