The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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://enviro-nsw.trclient.com/id=8095,18248972,50703838,472059,1?erl=http%3A%2F%2Fwww.environment.nsw.gov.au%2Fbeach%2FBPP.htm