Deregister Your Device
You can deregister your Amazon Instant Video device from your Amazon account directly on your device, or from your Amazon Instant Video Settings.
To deregister your device:
Go to Amazon Instant Video Settings and DevicesAmazon Instant Video Settings and Devices (Amazon.co.uk full site)Amazon Instant Video Settings and Devices (https://www.amazon.co.uk/aiv/settings).
Locate your device under Registered Devices, and then click the Deregister link next to it.
Many devices also feature a deregistration option directly within the Amazon Instant Video app. From the Amazon Instant Video Home screen, you can select Help
, and then Deregister Your Device
For Xbox One, open Amazon Instant Video, press the Menu button on your controller, and then select Sign Out.
For Xbox 360, select Settings from the Amazon Instant Video Home screen, and then Sign Out.
For information about registering your device again, go to About Accessing Amazon Instant Video & Registering Your Device