Hi Victor,
Very familiar with Jlex Review, I recently upgraded to 5.3.1 mainly to fix the bug that you had to enter an email in the backend if editing a review where the user has not been asked for an email. That is now fixed but the same issue also happens when a user leaves a comment. The only solution is to edit on the front end. It's currently impossible to edit a comment in the backend.

Also since upgrading from 5.1.7 I no longer receive emails that a review has been submitted. No settings have been altered I don't use cronjob it is sent immediately. I don't know if this is related to also updating to Joomla4 at the same time. I receive other emails from the website but nothing from JLex Review 5.3.1. There is also no emails in the sent list or pending list. Is this a known bug?