Can't activate apple tv
I just created an account but can't activate it on our Roku because I get a message "You must update your account to continue. To update your account, sign in on a device running iOs12 or late or go to appleid.apple.com
Question marked as
Did you go to appleid.apple.com, as instructed, sign in and edit/update the account information there?
Also review this support page for steps that you may have missed or skipped. How to create a new Apple ID - Apple Support.
An Apple ID account needs all the user information as asked, including name, DoB, country (state), a verified email address (respond to test message!), and a valid payment method.