2. Click into the Settings category.
It's at the upper-right-hand corner of the screen.
3. Then click "Billing Information."
It should be the second option under "Profile."
4. Depending on how you subscribe to HBO Now, there are different ways to go from here.
Since I subscribe to HBO Now through Roku, I had to click through to my Roku account to cancel HBO Now. When I got there, Roku had an "Unsubscribe" option.
But if you subscribe directly through HBO, the process is a little more arcane: Instead of selecting an unsubscribe button, you select the "Cancel Your Subscription" option. When it brings you to a new page, you'll toggle "Auto-Renew" to off.
In this way, you don't cancel your HBO Now subscription effective immediately — it's still available to access until your final pay period ends. If you've paid recently, you'll have another month of access.
For a full list of instructions for canceling HBO Now through various payment systems, check out HBO's instructions right here.
That's it! You're done.
Just like the final season of "Game of Thrones!" Boom!