Multiple Images Not Showing in Classifieds Theme

In my listing packages I have it available to upload 5 images. I have done this on the front-end and in the back-end. I see the images are being uploaded on the server, and when I view the source of the page, the images are there, but just not showing up when you view the listing.

I also see in the source of the page the mention of FlexSlider, but I am only seeing the one image on the front-end.
https://www dot offroadpartsforsale dot com/listing/kawasaki-teryx-roll-cage-new/