Board Thread:Support Requests - Getting Technical/@comment-35588571-20200920233715/@comment-9605025-20200921010448

Only staff could tell you for sure. However, they usually don't share information about an account with anyone except the account holder.

If I had to guess, the account was probably disabled for belonging to an underaged user. If it were simply disabled, it would say so when attempting to look at their contributions. If GDPR's "right to be forgotten" was invoked, there would have likely been some systemically names anon account on the wiki in its place. The fact that the current state matches neither of these scenarios suggests that it is the only other one I can think of; and underaged user.

But that is just a guess.