3D Model without Shadow

What do you mean by "default webcam software". I believe Mixamo a custom made web application running a 3d app outputting in canvas. It should not matter if you have a certain webcam app, atleast thats what i think. I also wonder would it needs a web cam in the first place, it has no functionality to use that or is that some old code left in or so? At work i dont have a webcam and it works just fine.

I was thinking his model is to high up in 3d world space. The floor is perhaps automatically projected in the scene. But the because the model is to high up the shadows dont catch the ground.

Perhaps if he tries to reset the app,m try delete cache and cookies and try it again with that same model.

I was looking at the old Mixamo website before the Adobe takeover. and i noticed somethign about using a camera, i also saw some of this in the code on the website, to bad we dont see those features anymore. I guess they are turned off. Though i think the code is still available in the engine.