You only have to refund @
2g19fu for the amount of money he got scammed for, which was $50 as seen
here. (This because the other user who got scammed through the use of your main forum account, @
methodicalbeast, got banned for being a ban evader otherwise you'd have to refund him for the money amount he got scammed for as well).
Sorry, but no, you can't. Actually, if you don't manage to somehow refund 2f19fu for the amount of money he got scammed for through the use of your main forum accout, then this new forum account of yours will be permanently banned as well.
I'm sure it wasn't you, but that doesn't really matter now. Ever since the
2FA additional forum account security measure got implemented, anything that happens to one's forum account, they're held responsible for it no matter what.