Page rarely displays changes when not logged in to WordPress

When I make changes to a page, I don’t see those changes until around an hour later if not logged in to WordPress. When logged in, though, my edits display immediately. This is an issue because one of my pages needs to use an API to get the latest submission of a form, do calculations, and display results. As of now, the page only gets the latest submission at the time of the last successful reload (it displays results for one form for like an hour, even if there have been more forms filled out since).

I’m almost certain this is a caching issue, but I think I’ve exhausted all my options: we use SiteGround, and I’ve gone into Site Tools and disabled NGINX DIRECT DELIVERY and MEMCACHED, and purged each cache in more than one place. It still seems pretty random when my pages choose to update.

If anyone is so kind as to try to help: you can tell the page I’ve linked is loading correctly when it takes ~10 seconds, since there’s an API call in there that takes forever.

If anyone has any insight or other methods on how to disable caching on this one page, I’m eager to hear. Thanks!

• This topic was modified 3 years, 5 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Developing with WordPress topic

The page I need help with: [log in to see the link]