Plug-In Adapter not working and/or recognised

I have a Ring Video doorbell 2nd Generation and have plugged in the Plug-In adapter however the power source on the app is showing ‘battery’ and the battery is running down.
Could the Plug-In adapter be faulty?
Should the power source be showing ‘Plug-Inadapter’ on the app?

Hi @user60612. What is the battery percentage? The doorbell may not accept the trickle charge until the battery has fallen below 90%. You can also reset the device and choose the correct power option. You can do this by pressing and holding the setup button for 20 seconds, then releasing it. Once that is done, you can reconnect it to WiFi. This should prompt an update, and the power status will also update. Let me know if this helps.