For some reason, My kids cant sign in to their accounts on their xbox. We have Xbox gold family and they can sign in on my console but when they try to sign in on their console, they get prompted for an email. They dont have an email!! The account is controlled by my profile. but my email info wont work for their profile. I can sign on just fine. What the hell is happening? Console has worked fine since Xmas, then all of a sudden today this happens. Any help would be appreciated.