Ring Video Doorbell 3 button issue

Hi Folks,I have a ring video doorbell 3 for the last 20 months. This week i have noticed when i ri g the doorbell, nothing happens. There is no activity on the doorbell (lights or sound). I dont get a notification on my phone either.Motion alerts are still working, live view is working also.I have reset the doorbell and reconfigured. Battery is fully charged and ring doorbell firmware is up to date.The doorbell button doesnt appear to be stuck and i can feel the button pressing when i press it.Anyone got any ideas as to how to fix this, or is the doorbell toast. I wouldnt mind except i rarely get people calling so its not from overuse.Cheers