Hi there! Did some digging for an answer to your dilemma.
The email for which you are waiting.... have you checked your spam box, it might have landed there rather than your In Box.
This found in the tips and tricks app (to be found in the streaming channels store).
Also, a contact for Roku help,
enter into your browser:
support.roku.com
Have you tried the support found there?
Hopefully, the information found on Tips and Tricks will be of help to DH as he searches for password and ability to change our email addy. Fingers crossed this works for you.
Good Luck!
Thank you so much! I’ll give ‘em a try!