Testimonials not found after taking website live

Everything worked perfectly when I was developing my website with the direct IP address in the URL. Testimonials worked just fine and I could access directly from http://xxx.xx.xx.xxx/~website/testimonial

I took the website live today and everything still works properly, all of the testimonials are still there, the front-page slider works just fine … but the testimonial plug-in can not be called up.

http://www.website.com/testmonial – gives a 404 error when I try to load the page.
http://www.website.com/testimonials-archive – this works just fine.

Not sure what I’m doing? Any thoughts for what I can check? My guess is that I’ve got a config file somewhere that’s still pointed to the IP address directly instead of to the domain name url, but I can’t see where that might be.

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