Stick up Cam Elite offline w/ solid blue light

I have 4 Ring cameras Stick up cam elite (POE powered) installed. 2 out of 4 are now offline with solid blue light for few hours and then no light from the device. This has happened after all the cams have been succesfully installed and were working normally of few hours/days.Tried all the trouble shooting methods, including pressing orange button for few seconds to pressing it for few times etc. The status has not changed.Have requested return for 1 devce last week. When I recieved the unit it was Ring Stick Up Cam Wired and not Ring Stick Up CamElite. I was told that is being done to use up old inventory and that they will not ship Replacement Ring Stick up Cam Elite ( I spent more than an hour to get an explanation, finally Ring agreed to ship Ring Stick Up Cam Elite- still waiting for tracking # for a week now). Today will be calling Ring for 2nd camera not working.Just to let you know I had bought 4 pack Ring Stick Up Cam Elite in the first place.This is extremely frustrating, any help or explanation is appreciated.