Forget Bittrex immediatelly! Scam, fraud, liars, thieves!
They put offline Bitcoin Gold wallet more than 2 weeks ago, because there was some issue with the wallet, causing tons of coins inaccessible. And they have no willingness to solve the issue somehow, they are just simply closing the support tickets. They are lying that they are waiting the for the solution from the developers. However, other exhanges fixed the issue in days. Meanwhile, their BTG/BTC exchange is still running, just for price manipulation purposes.