Like many channels that provide programming from a variety of sources, The Roku Channel contains two types of programming.
If you want to be able to view the subscription channel on platforms other than a Roku device, subscribe to the channel directly via its website. You'll then be able to view it on any platform supported by the channel.
I clearly have been unable to explain so that anyone can understand that I AM TRYING TO VIEW ACORN ON ROKU, not on a separate application. A channel that I subscribed to ON ROKU and can't view ON ROKU. I keep getting answers regarding watching Acorn on a separate app. This is not the case. I canceled the subscription on Roku and NOW I will just sign up directly through the Acorn app since Roku has made it unmanageable.