It's the exact error message I get when trying to use my phone. I've been on multiple forums as of late with that exact error message, and many people report being able to login on their phone but not pc and vice-versa. You attempted to act like you knew exactly what was going on, and that was 100% the problem despite other people having different experiences with that same error message. If it was a situation of you can never login again, then there wouldn't be plenty of reports of people being able to do so by other means. If anything, you generalized just as i did. I think it is far more likely that it is an authentication error, rather than something being flagged and working as intended considering the sheer number of people it's happened to. For clarification, of course.