Not sure. I link to WU as my backyard weather station is providing the local weather data. Have zero issues with the latest firmware.
Are you sure the WU is being properly updated? You can test the WU API key by requesting data to verify it’s working.
I initially had trouble telling the system where my station is located. When you load the API key and test it does the system report a green indicator?
I also initially had trouble clicking on the map to tell the system which station to use. Can’t recall exactly how I overcame that but I did have to reboot system a couple of times.