Chique Homepage Testimonial slider not working

Hello, Thanks for all your work on this theme. I believe this happened a couple of theme updates ago, and I just didn't notice right away. I'm using the free Chique theme with a child theme at precisionstructures-inc.com. In the customizer, I have enabled the Testimonials section to display 10 items. They used to display in the slider format, but now they are just displaying in a list. The slider nav images are still displaying at the bottom, but they do not do anything. I've tried copying the testimonial template part into my child theme from the latest Chique update, but it hasn't helped. Would you be able to give me some help please, to let me know if I'm missing something, or if there is a bug? Thank you.