Can't Save Custom Web Page

I am having same problem that someone else had a few weeks ago, but I didn't see how to resolve this in the thread. We had a couple different officers try to update this page, and we are unable to save. When we close it says there are unsaved changes highlighted, but nothing is highlighted, and we are unable to click "Yes" to save our edits.

Club #740544
Custom web page we are trying to update: showtime.toastmastersclubs.org/5monday.html

Can you please assist? Thanks!
Drew

Have you sorted your problem out? I made a change and saved successfully

Yes, thank you, I was able to get it to work.

The page includes a code snip from MailChimp. It has a style tag that seemed to create an issue with saving. Previously this tag was ignored, but seems now was causing issues. I removed the tag (from source editing), and that fixed the problem.