I'm not sure you can put the auctiva store url in the ebay listing.
It seems to be whatever idiot at ebay happens to stumble across the listing.
I've had a listing pulled cause I linked to auctiva store, and one refused to at all because there was a link outside of ebay.
But ebay state that its ok to link to somewhere that displays a gallery view of your ebay auctions and links you back to ebay.
there was also a seller had her listing pulled for link to her ebay shop. I guess its whatever idiot looks at the auction