Hello, my name is***** to Justanswer! Give me just a few minutes to look up some specifics, I'm working on this now.
Sorry for the delay, this just came up in my category. Here's the solution:
Search for "Acorn TV" within the Channel Store to add the channel to your Roku. If you are already an Acorn TV subscriber, you can use your regular email address and password ***** log in. Since you already paid, just sign in with your Acorn credentials and it should come up right away.