Navigate to the account page.
Enter the email address used to create your subscription and the password you setup when you created your account.
If you do not have an account, click the Create account button to setup your account.
If you have an account and forgot your password, click the Forgot password? button to reset your password.
Select the Subscriptions tab.
Click the Manage subscription button.
Click the + Add item button.
Add the additional items to your subscription.
If you need any assistance, please don't hesitate to reach out. We're happy to help make any adjustments to your subscription.