How do I activate showtime anytime on Apple TV?

When I go to play an episode on Showtime anytime on the AppleTV, it asks what provider I have. I select Verizon FIOS and then it gives me a message that says

"3. A success message will appear here and you can begin using Showtime anytime."
Activation code: XXXXX

It seems as though there should be a step 1 and 2 and somehow it skipping straight to step 3.

What it doesn't say is where I am to put this code. Does anyone know?