Please confirm the permission for plugins deactivation, and switching to the parent/default theme. As soon as we complete the testing we will enable all back.
Would be better if you will clone your website to the staging platform and send admin and FTP access to it so we can properly investigate the issue in this case.
Sorry, but we cannot tell you exactly that it is our theme’s issue. So in order to investigate the issue, would be better if you will clone your website to the staging platform and send admin and FTP access.