[Plugin : FLOATBOX Version 1.4.] Not working, video not opening in a floatbox

I have this site :

https://www.williampaulproductions.com/

As you can see by clicking the video thumbnails, no floatbox pops up, it just opens the video in the current window, and stretches it to fit the window. I have it installed and working fine on my other site so I am confused. I found in settings > floatbox plus > Activate Floatbox for Videos? – it states that

“Implements the video function. ATTENTION: It only works, if you do not have the embedded video plugin activated”.

Where do I deactivate the embedded video plugin? Not sure what they are referring to.

Just for reference this pages was copied and pasted from my other page https://www.naqproductions.com/film/projects so it isn`t an issue with the videos

Thanks!