My Doorbell 2 has worked flawlessly for almost a year but the last month we have noticed that the range is severely reduced all of a sudden. To trigger motion detection we have to stand closer than 10 feet even though it´s configured to work between 15-30 feet. I´ve tried different settings using motion wizard but no luck, all act the same way. Earlier it would pick up all movement from around 25 feet. My battery is fully charged.