Temperature and humidity no longer reported

My PA-II has stopped reporting temperature and humidity data sometime in December, thought it is still reporting air quality. Is this a known issue? Would power-cycling it help?

Hi @Farpointer, we would recommend power cycling the device. This typically fixes the issue if the BME280 (temperature, pressure, and humidity sensor) is not detected. If that doesn’t correct it, we can help you get a replacement BME280 through email at contact@purpleair.com.

My sensor is on the map, but not reporting any data. Power and WiFi all ok. What can I do to fix this ?
Thanks Willem