Slideshow does not advance

I have a slideshow embedded in a post. But it shows a single stationery slide and never advances to show any of the others in the slideshow. There’s probably setting that’s wrong. This is a screenshot: https://www.richardsilverstein.com/wp-content/uploads/2023/02/screenshot-www.richardsilverstein.com-2023.02.13-23_21_24-scaled.jpg

HOpe you can help me figure out what’s wrong.

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