Product Not Displayed When Photo Is Vertical

When I click on horizontal photos in this gallery, I can see all three products offered for this event. When I go to a vertical photo in the SAME subgallery, I only see two of the products. 

https://www.greatdanephotos.com/shop/events/akc_-_national_events/2025-akc-diving-dogs-challenge/?sub=02015fab3b9e75dcee11a246169f8881#photo=thumbs

This happens with any vertical photo, not just this subgallery. I am running a sale at the moment, but I tested a price list that isn't on sale and the problem is still there. 

Help?

Because the second image is smaller than the dimensions you have for your instant download digital file, so it won't show the product. 

Example: if your instant digital download max pixels is set to 800 and the image you uploaded is smaller than 800 pixels on the longest side (that one being less than 800 pixels in height), it won't offer the download product because it won't up size it. 

If you want to offer the original size photo to download, you need to set the max pixels to 0 for that product.

Thank you! I thought I was going crazy!