Search for "Apple Configurator 2" in the app store and download it to your Mac or PC.
Open the ”Apple Configurator 2“ and complete the pairing with appleTV.
Click "Add",select the " MovieboxPROTV.ipa"to install.
Please wait patiently.
Settings > General > DeviceManagement ,verify the MovieBoxPROTV .
Please open the TV version, switch to the "account " in the top navigation, and you will see a QR code appear on the screen.