Same problem here, blank room, press A and Xbox reboots. Normally have to switch off for a couple of minute before i can get into a room.
Seems to be happening more and more now.
Well I've passed all the tests, but its a bit hit or miss whether i see any bo2 games to join.
Public room 1 has a lot of people in, but no games showing to join.
Anyway lots of potential here, keep up the good work.