If your solar lights are not working, and the solar light sensor is not working, check for any dirt that is on the sensor. Clean it off and then check it again. Check the thin protective coating on the solar light sensor to see if it has worn off or has become opaque from sunlight.
If your Ring’s solar panel status is not showing within the app, as a general rule, you should first make sure that your app is up-to-date. If it isn’t, there could be a software feature that is no longer available in the app that you are currently using.