Only 2 testimonials rotate through.

Hi, I’m currently working on a website for a client. I’ve implemented the testimonials plug-in and for the most part it works great. The only issue I found is with the number of entries being displayed. It seems like it only rotates through two. When you refresh the browser it starts at a different out, but still only does two. The link is below. Thanks.

http://54.225.236.70/

https://wordpress.org/plugins/testimonials-widget/