All of the Carousel Cloud Players use the same registration process regardless of what type of player it is. When a newly configured player loads up you will be presented with a page called Register Your Player. You will then need to navigate to you Carousel Cloud and enter the following Key. You can also use the QR code and it will take you directly to the registration key.
On the Player Setup page, you will enter the above key and you player will connect and start playing the initial channel.