Board Thread:In-Editor Help Assistance/@comment-43649209-20191114002126/@comment-34888194-20191114011551

Most likely, your wiki is closed because they violate the Community Creation Policy. Feel free to if you want to view your wiki content. Usually, Fandom Staff "warns" you in the respective wiki that your wiki will be closed when you have violated the Community Creation Policy. Continuation of violation results in wiki closure.

Your account "cannot" be hacked, and is protected by MediaWiki. You are responsible for your own account.

Or possibility, your main account has been disabled, so that's why you can't sign back in. When accounts are disabled, passwords are randomized into gibberish and the contribution tag stated, too.