I'm trying to approve some comments in my developers.facebook.com/tools/comments tool.

Yet every time I click on Approved or even Hide, I get this message

"The content you requested cannot be displayed right now. It may be temporarily unavailable, the link you clicked on may have expired, or you may not have permission to view this page."

I have not made any changes to the app nor see any notifications for me to update/verify anything.

What could be the issue or is this a temporary issue?