Unable to update content

I have a wp WEBSITE that includes a blog. I am able to post to the blog and update my static pages, all except one (called “The Morgue”). When I try to update that page, I get the “The Connection was Reset” error and “problem loading page.”

Sometimes as I try to update on “The Morgue” page I get an error box reading:
GENERAL 0 At:https://vweisfeld.com/wp-admin/admin-ajax.php?action=proxy_atd&url=/checkDocument

before it switches to “problem loading page.”

I’ve read the support forum posts on this, many of which are old and relate to previous WP versions. Per advice given to other users, I disabled my plug-ins and that did not help. I also checked with GoDaddy, my ISP, and they say things are fine at their end.

Here’s my url: https://www.vweisfeld.com