I lost all faith in bittrex in 2017 when they introduced KYC rules without warning, and no grace period to withdraw. They basically stole millions of $ from account holders all around the world. Poloniex at least gave warning.

Best exchange option for bsd is AtomicDEX, no need to pay fees, just add the coin ourselves to a fully legal decentralised exchange with no kyc and no risk of getting hacked.