I integrated it and its working but a problem by user
 

my integration is working and when useraccountA register a account then mybb show the newest user is useraccountA but it never register it and i am releasing my game tommorow so help me guys i only have sometime left

What do you mean that it never registered it? Are you able to login to the forum with the newest account?

I would advise waiting until you have all of the bugs worked out before releasing your game. It is better to postpone it so you can release a functioning game rather than release a buggy game and likely have to close it to fix it at some point.

Yes it never register it :( could you help me to integrate it so i can tell you my login information