When trying to set up a new TV with FUBO I get the error the user ID and password is not a valid combination. I tried resetting my Roku password but got the same thing. Also on an established TV since this happened, am getting the same error message.
You never need to enter your Roku password in any app - no app has access to your Roku account password. If Fubo is asking for a password, it's asking for your Fubo password. Also, when an app asks you to log in it will offer the email address that's associated with your Roku account which is a Roku requirement, but if you use a different email address for your Fubo account, enter that.