SuspectSite origin Plugins are notfunctioning

Does Page Builder function normally if you create a new page, add Editor widgets and save?

By default, Page Builder should function normally on a new page. Were there definitely no other plugins activated when you ran the plugin conflict test? To confirm, you tested with every single plugin deactivated except for Page Builder and Twenty Twenty theme activated?

Is the result above the same with the exact same setup as above but with the following two plugins also activated:

* SiteOrigin Widgets Bundle.
* Classic Editor.

The next step would be to check the PHP error logs and then recreate these steps. With your test page, add content to Page Builder, save, observe the failure then check the log file. It’s another semi-technical task but all we really have left at this stage having checked everything else.

https://www.wpbeginner.com/wp-tutorials/how-to-set-up-wordpress-error-logs-in-wp-config/

If you don’t normally use an FTP client to access files on your server you can use the Hosting File Manager accessible via your hosting dashboard.