i cant rmemeber if u have an account there or not. either way if i did i would have used an old card so surely they cant charge that?
From the article it looks like they only remove credit from the available G2A balance (if you have any) and once that runs out they delete the account if you don't login within a short time.
As to being able to charge from an old card depends - if the bank thinks a merchant has a viable reason to request payment from you they may still honour old card/account details contrary to what people think.