All of these exchanges are greedy as they disable ada,xrp, tron withrow and lock your coins for days and you can't do anything about it, nor you can move them into another wallet.
That's why used the centralized exchange sites will be involved very high risk like this one. The exchange site is able to change the agreement and then the users must follow it and it looks crap in my opinion. How hitbtc frozen a lot of money in the exchange site and then bittrex and polo were doing the same as hitbtc.