My buddy just got the game and I can't join his games and vice versa....I noticed on his main screen he hasn't activated his battlelog yet, could that have anything to do with it?
Also, when he tries to sign into battlelog/Origin it says the username and/or password is wrong. Pretty sure he has to use his email that is tied to the Xbox.
I can't even look at the games he's in, he gave me the server number and the room I saw was completely different...
I think he has to call Xbox support and get his email and password from them.