I bought a flex in September. When I first bought it I had to tap it to put it into sleep mode but a few months later I received an email telling me I could now have the flex automatically record sleep, but I don't remember what I had to do to install that onto the device. Well that fitbit died, I was sent a replacement but again I have to tap it to put it into sleep mode. Is there a way I can get it to do it automatically? Thanks.
