InDesign Embedded YouTube Video Problem

Help! 

I'm having issues with InDesign which is making want to lose the will to live and I can't for the life of me figure out what I'm doing wrong (if anything).

Basically I am making a page spread which will contain 10 thumbnail images. Each of those images is a button which will then pop up an embedded YouTube video. These videos will fade in and then have a close function which fades out wheh pressed. I have created all the thumbnails and applied the animations/buttons/timing/etc  which work fine (for reference I have been following this video: Learn how to create an interactive pop-up video in Adobe InDesign)

Everything seems to work fine however when I publish the document online, I play the first video which works correctly, however when the video has closed, it fades out but for some reason it remains on the document - just invisible which menas I can't select any of the other buttons as when I click it just interacts with the embedded video - I realise this is really difficult to explain through words!

Any suggestions/ideas??