A new, better and updated BookRules is being built here: https://github.com/Skyslycedr/BookRules/
BookRules is a rules plugin, where you need to accept the rules to play.
Click through the wiki pages to know how to use it! If you have an issue, click on the issues tab and report your issue!
To ask for support join my Discord server: https://discord.gg/C8US3QmXhJ
The plugin page: https://www.spigotmc.org/resources/bookrules.91272/