Looks a little shifty!!
Support link does not work.
Domain ownership concealed Arizona USA
Server Location Paris France.

Trade with caution, What you can afford to lose and all that!

That said.....
Direct trading between Quark and Doge, Prime, Litecoin Bitcoin.
https://www.swisscex.com/market/QRK_LTC
https://www.swisscex.com/market/QRK_XPM
https://www.swisscex.com/market/QRK_BTC
https://www.swisscex.com/market/QRK_DOGE