Hi joannmccray,
Thank you for posting here in the Roku Community!
We appreciate your time posting here. We'd like to know more about the issue you are experiencing so we can further assist you.
Who is trying to make you change your email address and password, and why is it telling you to change it? Do you have a screenshot or photo of the instructions or error message telling you to change it as our reference?
Meanwhile, you can use a strong and unique password to secure your Roku account. You can check out this support article on how to create a strong and secure password for your Roku account. Also, please beware of scammers and make sure to follow instructions from legit Roku only.
Please let us know if you have further queries. We are eager to hear from you, and we'll be glad to assist you further.
Kind regards, Eunice