When you first request to download content, the device you are using will automatically be authorized for Download-to-go (D2G) use. If you reach your device limit, the FreeRange TV app will present you with a message letting you know that you cannot register any more devices.
There are two ways in which you can de-authorize an old device from this service so that you can add a new one in its place:
Option One: From Within the FreeRange TV App
From within the FreeRange TV app, you can select an option to de-authorize the specific device you're using - you cannot de-authorize other devices on the account. To access this option, select "Settings" and then "Manage Download Devices".
Option Two: From My Account
Through My Account, you can simply remove the device from the authorized list for FreeRange TV. This will remove access to both the app and de-authorize the device for download-to-go. Once your device has become de-authorized you will no longer be able to access the app or any downloaded content.