"Chat is down for maintenance at this time"
Edit: The button from the privacy settings page is working again.
In general, though, cutting chat while trying to fix this is probably a Good Idea. Less room for bad things to happen assuming you can turn chat off more quickly than you can fix the behavior.
Sorry, just ranting a bit. It's been frustrating dealing with a company that doesn't have a telephone helpline, even for paying customers. (We've spent thousands of dollars on Facebook ads, etc.)