[Autoblog] Autoblog not importing image

This is a website for a youth organization. Autoblog is not pulling in the images from one feed. The feed is from https://www.navalhistory.org and instead of the image, I get a white box. My issue is two-fold. I am not sure why I am not getting images from this one feed. I also was wondering if it would be possible to make the white box transparent? I do get items that have no image and I would rather see the background image for the page section than the white box. Any thoughts?