Hi,
I set up a simple scene with an object that has a PBR material attached to it and a camera using a HRDI Skybox (Panoramic).
My mostly metallic object is not reflecting the skybox, something’s missing.
My Material setup
As you can see the Skybox is not reflected, looks like it’s the standard Unity gradient.
My Skybox
I am using Unity 2017.3.1f1 on Windows 10