After waiting for about an hour, I received a notification that my withdrawal is rejected and I need to send over some KYC documents (ID, proof of address, and proof of payment methods). I talked to support as to why I need to provide my KYC documents but they didn't give a concrete answer, just referring to the T&C. I guess it was the same situation that LoyceV had earlier, that I triggered the KYC matrix somehow. I guess I'll just leave the balance there as I'm not going to provide my KYC.
Don't worry about that balance it will be taken care of by their representative @SirJohnVonSlotty during working days. We promised that you guys can withdraw the winnings and we plan to stick with it. Everybody so far got their money without doing KYC and we will do everything in our power to keep it that way.
I guess most of you doing reviews could get targeted by matrix since you guys are making new accounts, taking bonus, doing required roll over and trying to pay it out. Basically the behavior pattern that every multi account bonus abuser would do.