Blinking blue light, top half only

I had an electrician install the Ring Doorbell Pro. It worked for about a month with decreasing effectiveness. Then it started blinking a blue light, top half only. I just had an electrician replace the transformer with a Ring branded one. The Pro Power kit is hooked up to the chime. The house is only 11 years old. The light is still blinking blue, top half only. Any attempts to reset it will show a white light for about 15 seconds, then revert to the blue blinking light. It doesn't appear to be charging whatsoever. Is something wrong with it? Do I have a defective unit? Not sure what else to do at this point.