3) He said he will be refunding all people from the second Jupiter group buy because it never reach completion.

He can't refund any of the other orders as of yet because all the money is sitting in KnCMiner's account and NOT HIS, so it's out of his control. Now unless KnCMiner agrees to refund ragingazn628 first, then all your shares are currently tied up by KnCminer at the moment and out of ragingazn628.

FYI I got a refund from ragingazn628

Details : I had sent $500 via PP
I had sent a PM and an email to the PP address a few days back, got the refund today without any message.