The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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://sut1.co.uk/sLKtMlq1sd1Ju7vdiYyKpPf29qf3oKP_rP3-_fuv_-myt-fm4OXjueC20und3reUlZLG16TD1a7M2K2bmpnBnpSFlZuHk4SMlZ-amJiMLm5wZCpwbSI6Tw