Does anyone know how a new player registers for the brink site....

I have a few clan members who have got brink to move over,, the game now seems to have lost the stats code to register on the brink site ,,,
If you try to register any other way it just keeps askin you this code , i know it was there because thats how i registered ..
if there is no way of new members registering this means clan members from other games can't move over to petition on the clan site...

any suggestions ??