Lumo Play does not officially support web cameras
Lumo Play requires a sensor to track motion. Web cameras work well in areas with plenty of light, but will not operate in darkness. Web cameras offer inferior performance compared to 3D sensing cameras like the Orbbec Astra or Intel RealSense.
If you do not have access to a 3D camera, you can use most commercially-available web cameras with Lumo Play, though this is not recommended.