The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.
http://mailer.kilkenny.ie/l/Wa4AYZJPCK923QQotPJAmw/oQjpXM763tW892bCeLt5xm8maw/fT0nYR1gI4Lfd7WdtRr7WQ