The game won't let me play Ultimate Team

I can enter Ultimate Team, purchase cards from the Marketplace, set my lineup, etc.  However, I get booted out of Ultimate Team every time I try to play a challenge or a game mode.  The error reads, "ERROR Our servers cannot process your request at this time.  Please try again later."  I have been experiencing this issue for over a week.

Is anyone else having this problem or knows how to fix it?