About a year ago, I had registered an account on BC.Game and completed KYC. For personal reasons, I requested that this account be permanently excluded. I created a new account and submitted the same information of the KYC.
I have tried to find their terms, and it seems you aren't allowed to create new accounts and make deposits into BC games during self-exclusion. If you have self-excluded permanently, it means you aren't allowed to create a new account anymore on BC Game, if I understand correctly. Here are the terms I have found.
9.9. By self-excluding, you agree that:
a) You will not create another account during this period.
b) You will not deposit or attempt to deposit funds into a BC.GAME account.
c) You will not wager on this website during this period.
d) This is a voluntary act initiated by yourself, and Blockdance Africa Ltd will not be liable for any losses you may incur during the period of self-exclusion in any form.
It means you have broken their terms. I have asked again on their announcement thread about self-exclusion as well and linked this thread too. The BC game should answer on this thread about the actual situation. It's pretty simple; they will deny your KYC when they already have it, and that's the reason for showing you KYC has been used.
However, if you broke the terms, then there is less chance they will release your winnings. But being a human, from that humanity I will request that BC Game at least release the original deposited funds of that user. It will not be too hard for the BC game since it is not a big amount, but for the user, this amount would be pretty big.