If you'd like to sign up to get CBS All Access via Facebook Portal TV, first visit cbs.com, then:

  1. Launch the CBS app.You'll see the home screen.
  2. Select Settings, then select "Start your free trial".  The activation code will display on-screen. 
  3. Visit cbs.com/portaltv on your computer or mobile browser. 
  4. Enter the activation code shown (activation codes are NOT case sensitive), and click Activate.
  5. Once you've clicked Activate, follow the instructions to sign up for CBS All Access.

You can now return to your Facebook Portal TV to stream CBS All Access!