The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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://r20.rs6.net/tn.jsp?f=001iSRgHavnFTWffceSXosN4tPX2DIqpO3b-WNsus63MwCQ6gVhQT7MVwEUjg5Qd8P29qo1YxvA3QsR7SHJtrl9hBvGe_f4joPsp7CRhbgRr8djuZG4SzjzsMdJ6Uy78gKdAT8znFm2iAJEFuIs_Y04dvAkF3JzzVh5QTwAT8uFPxQ=&c=AMai9RYgSsFs8K_m7Oy2Jgr9pBWIFDJDaiS3BzyNO8jTAANzlt363w==&ch=sRVabPugQjKWcu2K-dytSBI0w6D2n7x5FkVJfY2f9o1FiNVWKuf78w==