I get very poor WiFi signal in certain areas of my home. In those areas we have the AV600 units. I have not had one issue in 8 months, until now. It randomly will not connect to the internet in two rooms. It just dropped the signal one day and now will not reconnect. I bring the devices out of those rooms and they will connect right next to a paired device that is working. When I take them back to those rooms, it shows connection for about 30 seconds then goes away. I tried holding down the pair button for 10 seconds to reset them. Nothing I have tried is working for those two rooms (that were working for months without issue). In a room no more than 10 feet away from one of rooms with connection issues, there is a device in there that works. I have tried other outlets in the two rooms and nothing works now. Why would it randomly stop connecting in just two rooms?