Contest Gallery stopped displaying images, shows only a blank block

Contest Gallery had been working fine, and there are 31 submitted images, but it has stopped showing images, perhaps after latest update but it’s been a few weeks since I checked it. There is a quick flash of a gray block when the page loads, but then nothing is displayed.

I deleted and reloaded the short code [cg_gallery_no_voting id=”1″] into a new siteorigin editor block, but that did not fix the issue.

The page I need help with: [log in to see the link]