Lightbox pop up
we have a slider on our website with a button that when clicked, pops up a video from youtube/vimeo. I added the prettyphoto in the rel attribute to get the lightbox effect, however it has recently stopped working and opens up the whole page instead. Do I need to change something in the attributes to fix this? Have been looking for solutions online with no luck.
Here's the site https://africandigitalhealth.org/ and it's the second slide with the button.