Cryptopia was a shitty exchange from the beginning

And they didn't do anything to change things for the better. So it was only a matter of time till they were hacked. They had plenty of stupid issues in the past that was a very clear writing on the wall showing that their management was very unprofessional if not to say outright amateurish and incompetent. I tried trading doges there some time ago but later moved away since trades were lagging as hell and it was almost impossible to trade there in any meaningful way (unless you made only a couple trades a day, of course)