Hello,
You can currently only post listings to eBay US or UK through Auctiva. We just added support for the UK a month ago and if things go well, we'll be expanding to other countries.
Feel free to check back periodically and we'll let you know if we've made any plans.
I'm sorry to hear you spent hours creating listings that you can't post. Hopefully being able to copy/paste your descriptions will make the process of recreating them not so daunting.
-Mike