You can not withdraw your ethereum token yet since they haven't opened the withdrawal for those coins. The only things you could withdraw in the NZ working hours is BTC, LTC, and DOGE based on the latest Cryptopia tweet. If you have further question you better post on their ANN thread:
https://bitcointalk.org/index.php?topic=1669443.0~
Just withdraw your coins and stay away from their scam exchange, also from
https://assetylene.com/ exchange, which is their re-branded version.
How do you know it's their exit-scam?, and the new re-branded exchanges sites is backed by the official Cryptopia team? It seems irrational, and I believe its just some impersonator that use Cryptopia UI theme.