Here are two different options that I searched for.
This one forces members to view a thread to be able to move on.
https://vborg.vbsupport.ru/showthrea...=force+members
This one requires all members to read forum rules and click accept before they can surf the site.
https://vborg.vbsupport.ru/showthrea...ht=forum+rules
For future references, when trying to find an addon try using a few key words in the search above then select 4.x mods/Title only.
The links I shared with you have the keywords I used in my search in the URL.