My site doesn’t work on iphone.

It works on Android.

Nor on my iphone.

Please try installing https://www.ads-software.com/plugins/enable-jquery-migrate-helper/ to see if that fixes the issue.

For more information on what this is all about, see https://wptavern.com/major-jquery-changes-on-the-way-for-wordpress-5-5-and-beyond

If the plugin helps, please contact the developers of the plugins or themes noted in its admin messages.

I found the problem

There was a bit of html tucked away in the megamenu/mobile themes/toggle bar designer, that was for some reason was still pointing to the local site.
I don’t know where in the server this was stored as I downloaded the entire site and searched for this string using findstr and didn’t find it.
Only noticed it tucked away deep in the mega menu admin area.
As I said, I’m very new to wordpress.
Android seems to be a bit more forgiving with such things.
Thanks for the suggestions.