Hey there thanks for your purchased our item! Did you try to import predefined template? Do you see any weird thing on the demo? https://wp.themeofwp.com/elegantmegaaddons/video-carousel/

Also maybe you’ve missed something? Can you please share your website URL for the take a look at your issue?

What’re your expectations? Ans What’s your test? Demo shows properly that videos and working properly and also plugin does same.