This is not true. I provided them with my social, which is another form of id here, my expired passport, my drivers license, they just want me to provide an ACTIVE [passport. Thats the only thing they are accepting.
Ideally, no platform would accept an expired document for KYC verification, it's not done anywhere. My advice is that if you've a huge amount on BC.Game, get a new passport, verify your account and withdraw your funds, but if the amount is not much, perhaps you may want to forfeit it. But next time, try not to get yourself entangled in similar situation, always read the casino's ToS before sign up.