Remote control requires one of the following receiver models: HR20 or later; H21 or later; or R22. To verify your receiver's model, look under the front panel door of the box, where the red reset switch and access card are located. You can also press and hold down the INFO button on your remote for a few seconds until the Info & Test screen appears. You'll see your receiver's model number in the "Receiver" line.
If you don't have any of the receivers listed above, you can use the app as an online guide and browse through channels and programming.