The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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=001YNlFxa6Id5guywXYhvjHkiKkj7VQol5RIT5A_A_prlXG5RiHlsmAtpP8-OJOZX_KogAn6_AWvDwrPeCLN6DN4UhSGOPHali5X9PSRmXXW8YBDaOoIWDUALzPi6Y6qdqPfLetojpx2qdRqy2JsndaJc9M9XCwhUPHfLWOYHSnyTHbcgEfYrT0YZgqAIE9nXOEQ6Azj6PHEJds2pgaBGmTNxXq_pbrSiAIUZJ5ENfDgkZeTLIid2bDenzNu7umGAA7&c=-FWG_keLpRak18SqMjPSYIgN4YqoBe4eX7sKp946s5X0TsZcigb7Og==&ch=wIXARGLmdfPEDv1Dvfd-8IzuZueLKPdz2DJ2g49ykF2Pvo0kK6qVZg==