I have a Roku player given to me by a family member. I want to change the HBOMax channel from his account to my account. When I delete the channel and add it back, I am not asked to provide my HBOMax account information. The previous account data is reassociated with the added channel. How do I add HBOMax from scratch?
Try logging out of the HBO Max channel/app using the Settings(gear) icon and then sign back in using your HBO Max credentials.
https://help.hbomax.com/us/Answer/Detail/000001276