JUX Before After Extension Not Sliding

Hi

I have having trouble getting the JUX Before After extension to slide either when viewed on a computer or on mobile.

I have made sure to do everything correct including enabling the two plugins as per instructions and also checked all server requirements are met. I have tried both versions for Joomla 3 and for Joomla 4 and the result / error is still the same. The extension shows the two images with my labels but when I try and use the slider it just won't work.

Here are some links to show the error:

1. When added in an article: thebelfastdesigncompany.com/showerdoctor2/index.php

2. When added in a custom html module: thebelfastdesigncompany.com/showerdoctor2/index.php

I would apperciate some assistance with this please as I signed up to your club / website for pretty much just this extension.

Thanks

Rab