It's good for the market to keep the prices stable between exchanges, if there is big variations the market itself will autoregulate the price to be similar. It's normal to happen, its called "arbitrage"
How many f***** days do they need to fix that issue ?
I want to withdraw my XDN, I don't want to sell them, I want them in my wallet.
They need to fix that problem or allow Withdrawal, no

It's not my problem if the price is not the same on Bittrex and HitBTC
