To activate Roku device on your TV Screen, the linking of Roku player and Roku account is necessary. Your Roku account records all the information about your name, the number of devices you owned, and your installed channels.
To Activate your Roku account you need to follow these steps:
Enter your Roku Activation Code.
Enter your details and create your PIN.
Choose the channels(free and paid) that you want to activate on your device.
Now stream your Roku device.