Yes, Solar Main is switched ON.

I can look at Solar/UV/ET Real Time Graph and see it being recorded.

Likewise in Advanced Charts, Solar, it shows the collected data.

Here is a copy of sentwudata.txt:

4:50:12 PM 4/15/2019
http://weatherstation.wunderground.com/weatherstation/updateweatherstation.php?ID=KVTBELLO6&PASSWORD=myob&dateutc=2019-04-15+20%3A50%3A00&winddir=258&windspeedmph=10&windgustmph=18&humidity=80&tempf=42.3&rainin=0.000&baromin=29.363&dewptf=36.6&indoortempf=71.4&indoorhumidity=34&weather=RA&clouds=&dailyrainin=0.730&soiltempf=&soilmoisture=&leafwetness=0.0&softwaretype=WeatherDisplay%3A10.37S&action=updateraw
OK
success

Thanks