Ring Doorbel Gen 2 says add a battery

Very odd issue. My device is.not seeing the battery. It says add a battery. The Gen 2 you cannot remove the battery. I have it hardwired in and you dont see it charge. It flashes blue but only at the top of the circle.I reinstalled it and camera says its updating firmware and when it comes back, it still says add a battery. Plus then the device is not working. I cannot press the doorbell to activate it. I then have to reset it and add a device set up again..All a vicious circle.Please help