There are times you may want to remove a Notion from your account, such as when you share it with a friend or send it back to Neurosity as part of an upgrade program.
To unclaim your device, go to the settings page of the Developer Console, and select the settings icon.
Then scroll down the bottom of the page and select the button that says "Remove device from account." This will immediately remove the device from your account and allow the device to be claimed again.
Curious about how to claim a device? Checkout Claim a Notion for instructions.