Embedded video in the whiteboard not showing up for participants

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I'm using Zoom to teach online English lessons to a young student. I embedded videos into the whiteboard but my student sees a static image, she can't hear or see the video. I also tested this with a second computer, and faced the same issue. As a host I can see and hear the video, but the participant doesn't hear or see the video even though I'm sharing the whiteboard. 

I know I can share the video from Youtube by sharing my screen, but going back and forth between the whiteboard and screen-sharing other content disrupts the in-class acitivities. 

I'm using zoom workspace 6.3.6 on a Mac.

Thanks in advance for any help.

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