Hmmm… well this is very odd. I visited using numerous browsers on various devices, on all I can see and interact with the page just fine.
There are only two scenarios I can think of.
- We are somehow seeing two different pages.
- This only happens when logged into the WP admin. Are you logged in when viewing the page? If you are try logging out. Let me know what you find.
Home you looked at the PHP error logs on the server? They might reveal something that could help debug the issue.