Ultimate gauntlet 11

I've played the final match 4 times to get 3 wins in a row. Everytime the game ends it says “error connecting to ultimate team” and backs me out to the main screen. I log back in and the game didn't count. The game never registers and the team shows its not used.

This happens often. Please resolve so I can get my objective for completing the full gauntlet with 3 wins in a row