No one usually makes an offer like the OP made. But here he may be facing account create or KYC problem or facing any other problems. But anyone can get scammed very easily by getting his offer. I think the OP should be careful and never run a shared account with this kind of gambling.
No one is professional in gambling, someone should not look for people to gamble for him, it is good to gamble yourself because what would likely happen latter would be scam. I am not saying you are wrong, that is what OP is all about, but not advisable.
I'd rather register myself than for someone else because the KYC I do is using my identity. If anything goes wrong with my account, I'm afraid it will impact me. Indeed @OP did nothing with my account but he can use it, even to deposit money into my account. Unless we can use a fake identity to register with the site, that doesn't seem possible because the casino site will find out sooner or later.