The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.
https://iweb.itouchvision.com/portal/f?p=customer:category_link:::::CUID,LANG:8A6A430FA0A402201A253E0531401A8C0F7AE4A6,EN&P_LANG=en