[SilentSoul]

Actually because of the different functions, you cannot just update the include and the plugin and it will work, you should try to learn the new functions of r33+ and replace them with your old functions its easy as the previous versions.

https://sampwiki.blast.hk/wiki/MySQL/R33 - The wiki will help you alot
https://sampforum.blast.hk/showthread.php?tid=485633 - registration tutorial it will also help you to understand the functions better and how the work on such registration systems