1.
I tried to do a rollback but it didn’t work because the changes were applied, in your update, also at the database structure level.
Site Reviews v5.0 stores reviews in dedicated database tables. This is different from version 4 which used the postmeta database table to store the review information.
For this reason, reviews submitted in version 5 will not work in version 4.
However, any reviews that were submitted in version 4 will continue to work if you rollback to version 4.
2.
New Reviews enter if associated Category, empty.
This is why the {review_categories} tag is empty. If the category is not being assigned to the review when it is created, then the notification (which is triggered when a review is created) will not contain the category.
Adding the category to the review after it has been created will not fix the notification as the notification will have already been sent.
3. It sounds like this problem is related to your previous support topic, “After 5.0.0 update I have lost functionalities”
I closed that topic as it seemed that you had abandoned it.
However, if the problem in that topic is fixed, then this problem will be fixed also.
4. Finally, if you want my help to fix your problem, then you will need to send me a file (or a pastebin link) with the custom functionality that you are using to modify Site Reviews.
I have asked you to send this to me a couple of times, but if I do not receive it, then I cannot help you to fix it.
Please also re-read my reply to your previous topic here: https://www.ads-software.com/support/topic/after-5-0-0-update-i-have-lost-functionalities/#post-13640433