The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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://lh5.googleusercontent.com/HzqWlQxGaoP29CMleNLSf7D-y0MiLmCxr2UHyKsophfA76No9AQiJPz7fysWis3dy3g=w1200-h630-p