Board Thread:Support Requests - Community Management/@comment-35289850-20200809170721/@comment-25014407-20200809175912

There is no set public rule that wikis will get closed after 90 days of inactivity. There are rules regarding both activity and content quantity that wikis will or can get closed, but exact standards are not known. It is also not allowed to create duplicate wikis, and recently it has also not really been allowed to create personal sandboxes anymore.