With the introduction of version 2.0, the name was changed from nx-YouTubeBox to NXD YoutubeBox. Furthermore, various functionalities such as header mode (now banner layout), Polaroid layout and the BlockLayer were moved to the Pro version. Existing and future users of the free version still have access to the legacy version 1.5.x, which contains these features in an older version. To get the latest updates for those features a pro subscription is required.
As this is a very large update, it is not possible to update directly from version 1.x to version 2.x. However, the modules can be installed in parallel to enable smooth migration.