Hello @Nettie551
Thanks for the post.
Please be advised that channel logins or authentication are handled directly by the channel developer. We suggest reaching out to Hulu's customer support team to report the issue and get help. They can resolve the error you are having with channel authentication.
You can contact them here: Hulu Help
We appreciate your understanding.
All the best,
Kariza
Kariza D.
Roku Forum Moderator