[Vray] Problem with shadows - 3d model

Hi, I can’t project the human shadow (it’s an imported 3d model) on the floor… “cast shadows” is already selected on the materials. There are also black spots on the floor.
It’s for a school project. I have to do simple things with the program, I’m not an expert.
Could you help me?

Can you post your model? The forum has a ±5mb limit so feel free to post link via google drive, dropbox, etc.

How’s your face orientation? Any flipped normals?