it looks like it should work fine, and all is okay from our side.
I would need to further check.
Please make a full backup of your site (files and database) and confirm it in your next reply.
Please note, that I might need to do some debugging procedures like enable/disable plugins, switch themes, change the default language of the user account, and/or access your website database to debug the issue furtherly.
I will share with you any changes or steps done in this process. Please let me know if you do not agree with the above or if I do not have your permission for any.
I would need to access both your site's wp-admin and FTP account, if possible.
I have enabled the private username and password fields in your next reply.
I suggest you create a new user, set it as an administrator and then add those credentials in the private fields mentioned.
You can safely add your information into these fields.
thanks. I checked, but haven't been able to fix the issue.
I would advise checking if maybe your hosting is not blocking some WPML URLs, and trying to disable the Wordfence plugin.
If the issue is still there, I would need access to the staging site and FTP access, so I can safely check in minimal on the default WP theme since it seems you are using a custom theme, and I need to confirm no other plugin/theme is causing issue and check further.