Virtual piano not showing in the exported video

Hey, I'm Alexis Gutierrez. I'm from Mexico and I really need your help with this.
When I try to download a video from my score on the website, the virtual piano doesn't appear in the video.

This is one of the videos that I made last year and those ones have the virtual piano at the end of the frame:
(first image)

But now I don't know why it's not showing in the videos that I download.
(second image)

I really wanna know why it's not SHOWING, or what am I doing wrong? Please, I need your help solving this, I have a PRO account and I make those videos for my students.