If you try to remove a device from your account and it fails to do so:
- Make sure the device is turned on and within range. You may want to turn it off and back on to confirm it is correctly powered before you try again to remove it.
- Try several times.
- If neither of the above recommendations work you may need to perform a "Hard Reset" on the device: First, Tap "my device is broken" after it fails to unclaim from the app. Then remove the device from the account by completing a "hard reset" by holding the button on the device for 16 seconds. Read more about hard resets here