Also with pokerstars people have to watch out transactions can get chargeback if you tell it's unauthorized transaction.
What's the timer on that? Would a 24 or 48h window make the transaction "safe"?
BTW, for people who don't play on PS, they should probably not accept that option. They might be required to gamble it a certain amount before they can withdraw.
You also get flagged if the funds you received where gained from collusion.
I can provide the user name in private so people can access recent play history, if they know how to. They should see micro stakes play with no hints of collusion or chip dumping.