Do I have to log in or sign up every time I want to watch Tubi? You only have to go through the registration (sign-up or login) process one time per device. Afterward, you won’t see the sign-up screen any longer. Related articles If I don't sign up, will I have access to the entire Tubi catalogue? How to sign into your Tubi account I keep having to register every time I click on Tubi Is Tubi legal? Finding your Roku Device ID Still need help? Contact Us