Board Thread:Support Requests - Designing Your Wiki/@comment-36210478-20190311211905/@comment-27453076-20190311220723

Yes, there is an auto-deletion script. If your wiki has under ten pages and hasn't been contributed in a while, likely chances is that it was deleted by that script. Per above, double check in case that isn't the case. Otherwise, reach out to staff and they should re-open it for you.