You can change any of your account or payment information on the "My Account" page of your Member Dashboard. Log in at: members.kelbyone.com. Hover over the profile icon in the upper right corner. Select "Account" from the drop down menu, then choose the Account Details option in the top row menu.
This will take you to your account details page to view and update your account information.
From there you can change your account details, update your email address, billing address, or password.