video not showing on theme DMS

i think i need a Custom CSS code for this theme for it work

you can see the video bar menu is runing,

this theme is a special one you mite need to install it to see how the
drag and drop works on theaming part works as it works with blocks.

my website: http://wildagenda.zapto.org

theme : DMS :
http://www.pagelines.com/DMS/
https://wordpress.org/themes/dms

https://wordpress.org/plugins/wpmbytplayer/