Then why are you posting in here if you have never used cryptopia before? i've used this on the past, and i am using it to exchange some BTC to ETH if i want to buy less than 0.10 ETH (since most exchanges does not allow you to withdraw less than 0.10 eth, and cryptopia does)
I myself did not encounter this service, but I watched reviews and read reviews about them. in general, everything is good neither better nor worse than others and you can work with them.