I had the same problem, but now that I found Slider Settings, I can’t figure out where to set the images.
Here is the site:
I don’t see an option to set “Featured Images” or “Slider Images”. I only see set Header Image but that doesn’t put images in the slider area, it puts an image in the header area.
I am temporarily using some other slider which was easier to figure out but I don’t like how it doesn’t go to the edges of the page.