In this case, we need a copy of your site to check what got corrupted.
Please give us access to your site and allow us to take a copy of it. I must install a plugin like Duplicator or All In One Migration for this. Please let me know if you agree.
If you need further help with this, please share the access details to your site with me.I'm enabling a private message for the following reply.
Privacy and Security Policy
We have strict policies regarding privacy and access to your information. Please see: https://wpml.org/purchase/support-policy/privacy-and-security-when-providing-debug-information-for-support/ **IMPORTANT**
- - Please backup the site files and database before providing us access. --
-- If you have a staging site where the problem can be reproduced, it is better to share access to the staging site.--
Our second-tier supporter was unable to replicate this issue. We will keep monitoring and will try to look for other similar cases to see how to move forward with this notice.