Yes, that is strange.
I would suggest you send a message to support. Something is not right here. Personally, I think it may have something to do with eBay rather than Auctiva, since your settings in Auctiva are correct.
I am not one to jump to blaming Auctiva. Usually, I find it is either something I have done, or, eBay has done. eBay is responsible for their share of our problems.