There are two ways to add the DishWorld app to your Roku:
From your web browser: Add the DishWorld channel to your Roku here. On that page, you will be prompted to sign in to your Roku account (not your DishWorld account). After you sign in, select the “Yes, Add Channel” button. To access the DishWorld channel immediately, you can refresh your Roku channel lineup by entering and exiting the Roku Channel Store on your Roku player. The first time you launch the app, sign in with the email and password you provided when you created your DishWorld account.
On your Roku: Access your Roku's main menu by pushing the "Home" button on your remote. Select Channel Store and push your remote's "OK" button. Go to the International section of the Channel Store and scroll until you see the DishWorld app. Push "OK" on your remote and then select "Add channel." When you exit the Channel Store, the DishWorld app will be added to your home screen. The first time you launch the app, sign in with the email and password you provided when you created your DishWorld account.