Write to support to resend your coins. Hitbtc is not limiting the transaction size and this sometimes causes not approved transactions
HitBTC is also giving me problems. I've had a stuck DSH transaction for 2+ days now. Here is the unconfirmed transaction:
https://minergate.com/blockchain/dsh/transaction/199c42a7c0d8f99d7445facbbb11ca539370023fed316fb2f98cf319eb7bf1cd(This is also a fairly large transaction). If I had known it was going to be an issue I would have done multiple smaller transactions. I opened a support ticket more than a day ago, but no resolution yet. I'm not sure their support knows what to do... Either way, it is quite frustrating and makes me want to avoid using HitBTC in the future.