I have now disabled the WPML plugins, so the website should be stable again.
Could you please contact your hosting support and ask them to increase the PHP Maximum Execution Time value?
Once that is done, please push a fresh copy of the website to the staging site, and I will continue investigating the issue there safely without affecting the live website.
WordPress.com said it is not possible to increase the Maximum Execution Time value from the server side. Please let me know what to do. it's been 4 days and everything is stopped because of the translation. if it will not work let me know.