Board Thread:Support Requests - Community Management/@comment-34259504-20180504023733/@comment-9605025-20180504224942

That is really odd. As an admin, you have the broadest possible editing powers; so no one here can help you. I don't understand why you aren't able to edit it though. Perhaps contact staff and see what they say. It is possible that subpage was created prior to the message wall namespace getting protected or that it is the result of some seriously knowledgeable vandal.