Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
This makes absolutely no sense to me. HBO really should've had a better way to do this. None of the other methods I read worked. This, however, did
Try to watch anything on the app. It will ask you sign in, either by logging in or creating a new account. If you choose to login, you can either enter your login info, or use a code. For the code, it will tell you to head to hbomax.com/tvsignin and enter that code
Honestly, I wish I knew why this is the method that worked for me. HBO messed up hard with this whole problem. None of it, at least from what I can tell, is the fault of Roku
I'm wondering if signing into GUEST MODE will work, as my daughter added HBO/MAX on her ROKU TV, so therefore she now has the HBO/MAX Roku account w/sign in. (I ended my HBO/MAX subscription, not knowing she was going to add HBO/MAX later so now my ROKU TV will not give me the option to sign-in, only start a new HBO/MAX subscription).
And talking to ROKU: They want $1 for the answer. Seriously?