So, every time me and my brother try to play matchmaking with him signed in as the guest, we play a single match, and then as soon as the match ends, it asks us randomly to sign in again… We do, then a screen pops up that says something along the lines of “profile is already in use” and the pop up WONT GO AWAY. We have fun that first game, then instantly have to stop playing. What am I suppose to do for that pop up not to happen??