Carousel doesnt work

I thought I’d found a good posts carousel but it doesn’t seem to animate at all.

I have 9 posts that are in the category selected. I want three across and to loop through all 9. I have 3 postsper page in query settings. display type of carousel.

Items per slide =1 makes the post huge. 3 seems ok
slides to scroll =1

Noting moves unless I set posts per page to 4 (or anything greater than 3) in whcih case the carousel spreads all across the page showing all the posts it can on the page width.

I want three posts to scroll one at a time continuously.

The page I need help with: [log in to see the link]