I was trying this setup and after following the config, the controller was clearly being picked up, but inputs weren’t doing anything in Supermodel.
I checked the controller separately using https://gamepad-tester.com/ as you mentioned and found all buttons and axes were responding correctly there. That confirmed that the problem wasn’t the controller itself but how the emulator was handling the inputs.
In my case it ended up being an emulator-side config issue rather than anything with the controller or Windows. Thanks a lot.