The light on top of The COR is not going off.

If the light on top of The COR is solid and not turning off, unplug The COR and plug it back in. This should power cycle The COR device. The COR will begin a blinking pattern as it attempts to reestablish WiFi connection. The light will then go solid for 60 seconds as it calibrates. This process may take several minutes, but the light on top of The COR should turn off after this process completes.