Add me to the crowd. Had mine since July 2017 and have had occasional power issues. Replaced the transformer with a 24V six months ago and was doing well until yesterday. Checked voltage at transformer, doorbell chime and at door (Ring connections) and all were reading 26V. Connected doorbell, switched on the breaker, and saw the white ring go around twice, then nothing. Push button - nothing. Hard reset - nothing.
Looking at other manufacturers now.