The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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://www.facebook.com/TeWhatuOra/posts/pfbid02aiTUYV8A6v9GtSmSfyhiS4b1vJVpjxPbGxreAbSnRtZfsAihHTwAxC7k9x3b3wf4l