Hi are you doing it from a phone or computer? There is a section called tech support maybe there is help there if not you can always contact minimins directly.
Once you've joined you can't view your profile, others profiles or private message until you have made a number of comments in other people's threads or started your own (I think it's 50).
I think this is to help stop spamming.
Keep commenting and youll soon have full accessxxx good luck