Was he able to cash out the btc or was he stopped?
He was able to cash out 2000+ btc as hufflepuff but his next withdrawal as robinhood was blocked because Stunna has found out that he is using exploit to win
I don't think Stunna actually found out until Robinhood apparently made it obvious by getting like 140 wins in a row at 50/50 chance , which tipped everyone off. So it might just be him, who purposely did that to show the flaw. But even now, without Stunna's comment on the situation we still don't know if Robinhood was actually Hufflepuff.