Slides piled atop each other

I updated both WordPress and Master Slider and, as a result, my slides now all bunch up atop each other in one big slide. I’ve tried to fix it but am unskilled in html5 to sort it out. I deleted Master Slider (free version, am considering upgrade if it works smoothly) and reinstalled but now I cannot see any slider, let alone a properly functioning one.

Any ideas?

https://wordpress.org/plugins/master-slider/