I have no way to contact with them. the ticket system is so slow and their twitter account literally publish one sentence a month. They refused to gave users free steller lumens airdrop. Now I don't know if they will give us BCC after Aug. 1. any ideas?
It's not advisable to let your coins stay at an online/web wallet or an exchange. Most of the experts are saying that its' good if you are going to hold your bitcoins where you have the control to the private keys / seed. That's a better place of storing your bitcoins. Bittrex has enable withdrawal's maybe they'll do something about it soon.