I died around 2 weeks ago, and then some one
bought one of my CP listings. He sent me the money
and now it counts as I have the money. Is this
susposed to happen? Also can some on step in and
give him his credits back (moderator maybe)?
It is intentional; it is not supposed to be possible to find out whether someone is dead or alive through credit transactions and as a result nothing prevents someone from sending credits to the deceased.
A dead person can't communicate. They can't reply to their DMs and I don't think they can see them. So there would be no way to avoid this. I hate to hear that Luke died, he seemed like a good trader in my dealings with him.