cgrray
You didn’t provide us a link to your webpage with a problem, so I can suppose that the reason of problem is a missing/incomplete the DOCTYPE declaration for universal compatibility. It should be:
<!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN” “https://www.w3.org/TR/html4/loose.dtd”>
You can find a detailed instruction “How to change the DOCTYPE declaration in the WordPress” on our website:
https://www.wowslider.com/rq/doctype-for-image-slide-jquery-in-wordpress-2w.html
If problem will persist, please contact with customer support at support [at] wowslider [dot] com. Provide us a link to your webpage with a problem and info about WOWSlider and WOWSlider plugin versions.