Board Thread:Support Requests - Getting Technical/@comment-25959664-20161218194723/@comment-168424-20161219185004

If you could, it would be MediaWiki:Chat-private-messages, but it isn't on the whitelist, so you probably can't edit it.

Ask Wikia staff, if they will unlock it via Special:Contact/genera. Also make sure they add it to Help:System_messages/whitelist, if they unlock it.