Hi,
I got the door/window sensor the other day and are having an issue.
I can add the sensor to wifi, but after the next step, when you set a name, image, icon and press submit, it takes a long time then dies with error message of connection lost. All leds go dark on device and it wont wake up without fiddling with the battery or reset button. I tried resetting it several times (10 sec on button), but nothing helped. Is my device broken?