JQuery Slideshow not loading

I found a jquery plugin that will make a fullscreen slideshow for me to use on the homepage of my portfolio website, and when I coding everything in HTML/CSS before turning it into a wordpress theme it would work fine, but now it won’t load.

I’ve been looking through past forum posts, and other websites trying to troubleshoot it, but it has all been to no avail. Anyone have any idea what is causing it not to load properly?

Plugin: Supersized! https://www.buildinternet.com/project/supersized/
URL of my website: https://www.ericpait.com
URL of the HTML/CSS site: https://www.ericpait.com/test