Hi @Oscargirl,
Thanks for your first post in the Roku Community!
We can certainly understand your concern regarding your login credentials for Disney plus channel.
Please be aware that for any information related to the channel's account authentication functionality, It's best to reach out directly to get the channel going on your Roku. They can resolve the error you are having with the channel login. Please be noted that Roku doesn't manage channel logins or authentication and many channels on Roku are developed and maintained by the channel provider themselves.
You can reach their support team here: Disney plus help support
If you have any other questions or concerns, please let us know.
Best regards,
Mary
Mary F.
Roku Community Moderator