Hi,
I just looked at the listing, the red x under each pic is where it should say "click to enlarge", or "click to supersize", I don't remember exactly what it says, but that is what it is supposed to be. I just checked several Auctiva seller's listings on eBay and saw that those using the click to enlarge pics either had the red x like yours or some did not even show the pic at all, I think they are having an issue with that right now. I saw that those who are not using the click to enlarge were having no problems (like me).
As for the scrolling window, I was told that it will display up to 14 (or 12, can't remember) listings, and if you only have a few listings it will duplicate your listings to fill it up completely.
Regards,
Ricky