Recognise the limited mode
Google says basic TV mode can use a limited set of preinstalled apps and ordinary inputs without the full Google Account setup. It does not provide the same features as full Google TV.
This option applies to televisions with Google TV built in; it should not be generalised to every external Google streaming device. Record the actual television model and setup state.
Use the normal route to full Google TV
Google’s documented transition begins with the Set up Google TV banner on the home screen and continues through the normal account/setup process. Read the permissions and terms shown on the television. Installing a streaming subscription is a separate later action.
Do not use an Android APK or a new service password as a replacement for completing the platform setup. Those actions do not change basic mode’s feature set.
Install the player after platform setup
Once the full interface is configured, use remote search or the Apps tab to find a genuine supported player. Compare the developer, account formats and any app purchase. Then test the actual service account separately.
If the app is still unavailable, record that as a distinct store/model compatibility issue. It is no longer explained simply by basic mode.
Avoid a needless reset
Google distinguishes moving from basic mode to full Google TV from starting setup again through a factory reset. Do not erase the television as the first response when the normal setup banner provides the required path. Keep any existing input and account configuration in mind before a destructive action.