The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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://secure.artezglobal.com/registrant/donate.aspx?eventid=44050&langpref=en-CA&Referrer=https%3a%2f%2fwww.royalmarinesmuseum.co.uk%2fcontent%2flatest-project-update