The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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://fe.avvio.com/convert/site/Castle Leslie/en/rate/36751.html?allow=V_ebJA9Yerbz1nhCvWuITIpbIajsV6nYoXU3otO0WvM