Hey 8!,
So I grabbed your project and was able to get the reflections and your model to render correctly. I think the issue you were having was with the two Directional Lights in your scene. Mobile only supports one ‘Directional Light’ and one ‘Skylight.’ All I had to do was delete one of your Directional Lights and I changed the brightness on the remaining one.
Scene Set Up
Mobile Preview
Let me know if you get the same results or if you need more help.
Cheers,