The extra newsletters may have their contents placed elsewhere on the site
To make modifications to your account, check your confirmation email. You should have a link and a password provided. Follow the link, use your email address as the login, and the password provided to make adjustments to your account. If you lose your password, the system can send you a reminder email.
You can also get to the
login page via a link on the bottom of the "advanced registration page", where it says "Modify/Delete Account."