We installed version 1.2.4 of Simple Slider. It's listing the proper slides (seen when inspecting the element) and showing only the first one as expected but the Next and Prev buttons are not advancing the slides.
The page with the issue:
It looks like the Next button should be changing the css class of the next slide from et_lb_simple_slide_hidden to et_lb_simple_slide_active but nothing is happening.
Any help would be appreciated.