Board Thread:Support Requests - Community Management/@comment-27364552-20140726214844/@comment-1038387-20140726215527

After some searching, I cam across this - I think that's who you mean, right? That account is globally disabled. It could be for a Terms of Use violation (usually because the user is younger than 13), or at the user's request, or sometimes temporary (up to 24 hours) if the user asked for a change in username.

However, there is no way for us to find out the reason. Staff only discusses these kind of things with the blocked/disabled user.