Co-Op Rivals disconnecting every match after latest patch

Hello. My brother and I are trying to play Co-Op Rivals, and since the latest patch we keep getting disconnected in every match. The game sends us back to the Ultimate Team home screen in the middle of the match, and we are losing Rivals points because of this issue. Our internet connection is stable and we do not experience this problem in any other game mode. Please investigate and fix this problem, because at the moment Co-Op Rivals is unplayable for us. Thank you.