Try going to the Glossiness map and inverting it. Depending on if the material is set to "Roughness" or "Glossiness" protocol, the glossiness map will be reversed in one of the other. So "invert" and see if it works. If not write back as there may be something else set wrong.
One thing you can test is disconnecting the 'Glossiness' map completely and driving it in the material by the spinner. Make sure the 'Reflection' color is white or light gray so things reflect. Try "1.0" (Glossiness) and "white" (Reflection) and see if the glossiness changes. Keep playing with these settings until something starts to show up. If so, then things are working. Now reconnect the map and try manipulating it again.
Rob Holmes

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3ds Max (2023-2026), V-Ray 7, Ryzen 9 9950X3D Processor, DDR5 128MB, Gigabyte Aorus X870E Master motherboard, Sabrent Rocket NVMe Gen5 M.2 drives, NVidia RTX 4090, Space Pilot Pro, Windows 11 Pro x64, Tri-Monitor, Cintiq 13HD, Windows 11 x64
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