From the explanation I read, it seems like you are legitimate and correct, I am also surprised to see this if it is true that BK8 confiscated your winnings, but we also need to hear from BK8 before making a decision.
Hi rise, I understand the need to hear both sides, and I absolutely welcome BK8 to step in and explain their position. I was using BK8 for years now and never had any issue, most likely because I lose most of the time lol.