Unfortunately, I read this post too late...
This 'exchange' is indeed a scam. Not only do they blatantly lie in their FAQ (it is impossible to withdraw altcoins), they have lots of fake volume. There are no transactions, nor any history of trades, yet they appear to have big volume on some coins.
When I try to sell 0.63 DASH, it shows as a sell order of 1.09 DASH. The price of coins changes, but there is no evidence of any trade whatsoever.

Please stay away from this scam!!!