The Open Beta for Crysis 3 on Xbox 360 has been telling me that my account does not have the permission for Xbox LIVE Functionality, though I'm not sure if this has to do with account restrictions or not? My age is above 18, and to test it out I made a whole new profile, updated and everything, and it still lists the same thing. Any ideas?

You have gold? Trued restarting console/ redownloading profile?