Cryptopia has generally NEVER supported any forks and disclose this.
In order to take part in a fork or swap you need to withdraw funds before they put the wallet into maintenance.
Leaving it to the last day is never a wise move. Allow more than 48 hour prior to a fork. (Network congestion and wallet congestion being potential issues + it also doesn't leave time to fix any technical issues). Making a support ticket just hours before the fork is happening when the problem is due to a technical issue is unlikely to get it resolved in time. A transaction cannot be processed when the wallet is in maintenance. The issue cannot be resolved until the wallet is out of maintenance.