Go to Settings -> Network & Internet -> Select Network -> Privacy -> Use Device MAC
Select button: Used to select a content in a list. While playing a tv channel, pressing the select button will show the channel list while playing continues in the background.
Cursor: Used to navigate up/down/right/left in the app
Blue button: Used to reload data when on home screen. Used also to search for movies/tv shows when on movies/tv shows pages.
Yellow button: Used to add/remove content to/from My lists (favorites)
Red button: Used to change subtitle
Green button: Used to change audio track