The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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/arina_lala_nzta_govt_nz/EsrD4qzmVLtHqhzlz5jhydEB5NyHhdiAcAyfGRyXmux3vw?email=fyi-request-10998-cf45e98f%40requests.fyi.org.nz&e=5%3a8unpr6&at=9