I have deposit, trading, and withdrawal several times already and no problem at all, I read a lot of complaints but they already solved those issues I don't want to say that it's not going to happen again but so far Cryptopia is legit although there are backlogs in their support ticket, I recommend to trade with cautions.
I also experienced like this, several times the transaction but never and hopefully there is no problem that needs to be questioned. keep safe doing transaction.
there may also be a problem but I think it can be solved well.