There has been a lot of criticism regarding Cryptopia. They clearly did not manage well the huge increase of their customers, they were obviously not ready for this. When I see that someone has been waiting couple of weeks for the withdrawal of his Onions, it is very sad. I assume that as a consequence of these problems, they will be punished by losing of many customers and it will not be easy to get them back as the competition is quite strong among the exchanges. It is also really important that Cryptopia is not the only exchange for trading of DO.
That's why I didn't use Cryptopia anymore, currently used Kucoin exchange, got no problem. But I heard Cryptopia try to fix this, I don't know if they really sincere about this issue.