Video Doorbell (2nd Gen) - solar or doorbell power issues

Hi. I'm looking for help with my Ring Video Doorbell (2nd Gen). I confirmed that there is power (low voltage) coming from my door bell wires, which I connected to the 2 screws on the back of my Ring. However, the status never indicates it's from a wired source, nor does the battery level ever increase. On a related note, I bought a solar panel. Let it bake in sun for a couple of days. Same issue. I see power from the solar panel but when I connect the wires to the 2 screws on the back - no charging and the status doesn't change. I tried this with 3 different ring's with no luck. Any help?