If you are trying unsuccessfully to activate your Roku device, it's possible your activation code has expired. To check, go to your Roku device and open the PBS channel. If you need to activate, Roku will present you with a popup box telling you that your old code has expired and you need to activate. Roku will give you the option to get a new code. Click OK and the box refreshes with your new code.

Learn how to activate the PBS app on your Roku device

Related topics:

If I have multiple Roku devices, do I need to activate on all?
What is Passport?
Does Passport cost anything?
Can I use the PBS app on Roku without activating?
I activated my Roku account but my Watchlist isn't synced with the Watchlist on my computer
How do I know if my Passport member benefit is activated?
How can I tell which are Passport videos?
I already have the PBS app on my Roku, why do I need to activate?
Can I stream Passport content on my Apple TV?