[Plugin: FancyBox for WordPress] FancyBox for WordPress is not working while FancyBox 1.3.4 does

I had originally downloaded FancyBox 1.3.4 but couldn’t get Galleries created from elements who have the same “rel” tag to work. Instead of it reading one gallery on a page, it would show all of the images within the page.

I then downloaded FancyBox for WordPress in order to select the following under Settings: Galleries –
“Do not group images in gallery automatically (use this if you want to make galleries manually with the REL attribute)”

Although now my FancyBox for WordPress is not working. It shows up as a single image instead of playing the slideshow.

https://www.ads-software.com/extend/plugins/fancybox-for-wordpress/