AFAIK this topic should be moved to the Digital Goods board, can you recover these accounts after ip is changed?
HackForums.net does NOT condone the selling of accounts, and any and all accounts that seem to be tied together in any way by selling or multiaccounting will be closed the moment staff figure it out. They close at least ten multiaccounters a day, not including the multiple accounts. Be wary buying these accounts because I can gaurantee that if I figure out which accounts they are, I'm reporting them immediately. And I've already got some good guesses for two of them.
Account sellers on HackForums do it knowing the accounts are being bought to scam people, and I don't condone that in any way.