homepage featured slider problem

Hello, I'm having issues with the homepage featured slider in the Catch Fullsreen Pro theme. I've uploaded five 1920x1080 jpgs, and the slider seems to work on laptops an Android Phones. When I check it on my iPad, the images in the slides don't scale to the proper resolution, I only see a very small part of the slide (the top bit of the image), zoomed in with the wrong resolution. Can you help me out, please? The URL is hhps://abysrefi.nl