A:Answer I'm not sure what page you saw that said it wasn't supported by Instant Ink, because it absolutely is, provided you have a WiFi connection.
The easiest way to sign up is to do it during the original printer set up. During the process you'll be asked if you want to sign up. If you tell it "yes" it will take you to a page where you put in billing and shipping info. Just confirm that everything that's entered is correct, and that's pretty much it.