The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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://nztransportagency-my.sharepoint.com:443/:f:/g/personal/priscilia_gain_nzta_govt_nz/EmLea1Ygcp1Gnoo39vqvt-kBhA3SCBhCHKsDK3dGF9-HKg?email=fyi-request-10995-142b86e5%40requests.fyi.org.nz&e=5%3a5ptXGh&at=9