Why is my Voodrop not staying firmly on the stand mount?

Make sure your Voodrop is firmly connected to your stand mount.

If your Voodrop feels like it's a bit precarious on its stand, that means that it is not seated into the stand mount correctly.
 
There is a tab at the top of the frame that slides into the little tray on the stand mount, and when those two are connected, it makes the frame stable, but still easily reversible.
 
That's part of the design.
 
Watch this video at 7:03: https://anyvoo.com/webcam-backdrop-setup/