Take your business elsewhere to a decentralized exchange or somewhere that has rock solid security.
Crytopia already allowed BTC withdrawals and that's a good action by them rather than be silent for long time and left without a trace. The said action lead others to get out to that exchange with their funds which is a good thing.
If you don't have an active funds left on Cryptopia prior to hacked then stop giving people an advice about using another exchanged instead. We know what we are doing.