See the "Don't have an account? Register here" message? Click the "Register here" link.
Please fill in the required fields and click the "Sign up" button. You will be sent a confirmation email message to whichever email address you used to register.
Please check your emails to find this message. Can't find the confirmation email? Please reach out to us and let us know, but before that, please check your Spam folder to make sure the confirmation email did not end up there.
This happens sometimes. Once the confirmation link within the email is clicked, you will be taken directly to your new Mango account.