Pop ups not working, display options all broken

Lovely looking design. However I am having a few issues:

I can use the thumbs option. However it then just opens the video in a new browser window instead of a pop up.

Lightbox video gallery – displays a random thin black line on the site with the video title and does not work at all.

Video Gallery/content slider – does not show description – view more when clicked does not pop up, instead opens video in youtube as an embed version.

Video slider – I get ‘oops the embed code for this video is invalid”

I can’t make the video page live as my visitors will not appreciate it not working, however, I do wish to use it as I like the design.

How can I best provide you with the info you need to check these issues out?

My site is

http://www.metalmouth.net

https://wordpress.org/plugins/gallery-video/