The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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=001NHavkEEZaqPQLxMMjnFvFYIGMexn1q_y3xtc4vDyFEayWriY9qk_Qzridolz4qlh7Zd4iS1EFhzcMa5I6OHdkiPpNETOZiPYd73Fzf91WIpJE1vpWM82CoXTy8QtnnEUAaIvo694Knl8dw9B07DesCHs9gynVL29atL2ke5aNh4XNs5hogNSUw==&c=lew_pEe1fzScNuTb7VhwnyY7U50YVtUBLpdmknBZh6vL4JqK2svckQ==&ch=9hGsv-LKWG6VVksuA8aDMSA3ZXnhaYF5gU3cv-1aETpd27lb7PQkpg==