I get the black screen too. It is even present in the sample app. From what I found, the sdk injects a div in the body that takes up the whole screen and sets the background color to black. Now as to why it does this, I have no idea. Hopefully someone from Zoom can answer that or point us in the direction of getting that changed.
Zoom Team Please provide some solution
As a temporary workaround for the black screen, I’m just adding a style to the element to make its background transparent.
document.getElementById('zmmtg-root').style.backgroundColor = "#00000000";
thx for reply andrewgrs
but problem not only black screen it not start meeting too