oQey Gallery – Thumbnails Not Showing

I have tried all of the FREE skins for this gallery. Each skin does not show the thumbnails on the navigation strip at the bottom of the page. Everything else works great. The thumbnails are blank boxes. You can see this on my website below. Thanks in advance for any help. Website: https://www.shutteringthrulife.com/strictly-street/

https://www.ads-software.com/plugins/oqey-gallery/