Why are product images not appearing in dropdowns on my site?

[Dinosaur_III]

Hello. 

My store Pro-Drive Fasteners  product viewer/wholesale site (not taking orders through this site) is opening images in a new tab when product images are clicked. Additionally, when the dropdown product is selected, it's respective image is not appearing. 

It was working a few months back, and now is not. All products have correct images and variants align with respective images in my products panel. 

Any help is greatly appreciated. I am using Debut 17.4.0 theme.