Gallero fails with Montezuma template

Hi. I am testing templates and gallery plugins for my site and Gallereo was just perfect for me. Montezuma template I like a lot but I found that Gallereo don’t display the images only the dimmed background, the rotating wait icon, the title, the description and the left and right arrows. But never any image. Do anyone have any indication of this before and maybe any suggestion where to find the problem and resolve it.

https://www.ads-software.com/extend/plugins/gallereo/