Gauntlet 10, cannot log into ULTIMATE TEAM

Hello, i have a problem.I cannot connect into the Ultimate team. It started 2 days ago when I was playing gauntlet, I win 2 out od 3 marches but when I was winning my 3rd game and my opponent disconnected I got kicked out of Ultimate Team, then when I came back suddenly I could play with my first gauntlet squad, but I wanted to win with my 3rd so I started a game and got kicked out again after I won im full time. This happened 4 more times. I tried with first squad but its happened again. I reseted the game and tried rivals and it worked for it. But when I tried gauntlet it showed again. Then I though I could disconnet alt+F4 after I concede a goal, and now I cant event log into the Ultimate team. Please help me, I am so lost and I dont know what to do.