Cannot make any changes in Enfold theme or page content

Dear Enfold Support,

I have lost all ability to update my Enfold site theme or content since last night.
I can login to my WP admin. I can see the theme and the content in the dashboard. But I cannot make any more changes, either in pages or in enfold settings. This is happening in my staging site as well as my live site.
Around 21:45 last night my editor stopped saving changes. I was able to release staging to live, but I cannot make any further changes in either environment.

I have spoken to my host Godaddy and after 2 hours of me reproducing these errors (x3) they say that it is a theme issue (Enfold), not their issue… :$
>> Please can you help me regain the ability to work in my site?

NOTE: I have used Enfold on many other sites I’ve built and managed, and have never had this problem before.

Below are 4 examples of errors I am getting.

1 – If I try to edit menu (Appearance > Menus> Footer menu)
Then the save wheel turns, then eventually goes to a page with ERR_CONNECTION_RESET – and changes are not saved

2 – If I try and edit Enfold Theme options (Enfold > Theme Options > Header> extra information
Then the Save all changes wheel spins, then message pops up “Saving didn’t work. Please reload the page and try again” – and changes are not made

3 – If I try to edit a page (Pages > All pages > edit OR via Front end page > Edit page)
Then the wheel turns on the avia builder content area – but the content never loads.
So I cannot make a change.

4 – If I try to change site settings, these don’t seem to work either.
If I go to Settings > Reading and change (number of syndicated posts), when I press save, the page just reloads – and no changes are made

Deactivating all plugins does not make any difference.
Errors are the same in a private browser.

I have tested and reproduced these errors multiple times today, so there is definitely a problem.

Not sure if this is related: When I login to WP directly (not via Godaddy) I also keep getting WP login errors saying my password is incorrect.
(I have reset it many times).
After the first time that happened (20 September around 17:45) I got an email from WordPress:
“[PW Solutions B.V.] Your Site is Experiencing a Technical Issue”
“Wordpress caught an error with Yoast SEO plugin…”
(Link where error was caught in private info)
“Check your site” – I did this but it looked fine front-end
“Login using recovery mode” – I did this but could not see anything.
“And if that doesn’t work, contact your host” – I did – and they (Godady) in turn referred me to you.

The email from WordPress included this:
“When seeking help with this issue, you may be asked for some of the following information:
WordPress version 6.0.2
Active theme: Enfold (version 5.1.1)
Current plugin: Yoast SEO (version 19.7.1)
PHP version 8.0.22

I truly hope you can help.
I just finished my new site and I love it! I just need to be able to access it again….

Krgds, Gil

Links and login to my site are in the private content