My Tempest has connected fine to WU for several years in Windows 10&11, but PWSWeather won’t recognize Tempest or weatherflow as hardware.
I haven’t checked the docs lately, but the only native Tempest connection for sharing your station’s data the last time that I looked is to WU…and even then not in all regions of the world.
If you check the third-party integrations section in these forums, there are a few available packages that offer the function of uploading to the various weather data sites…