the-doctor I can advise you only to wait, as we are currently working with Cryptopia to resolve the situation and ensure all coinholders coins are safe - as you can imagine, exchanges have their hands very full right about now with the BTC fork.
Other than that, a short, respectful support ticket stating that you support the fork and would like to see Chancoin continue on their exchange would be appropriate, I think. Please be respectful though.
Thanks for your support and I hope to issue a more thorough update here soon,
Goss