The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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.eventbrite.com/e/lets-talk-about-disability-ppn-voice-for-disability-tickets-60298909662?fbclid=IwAR1qhwl6vDBse-bDm0uZ2RSaBFKr4ZfjqGCWy4GE7GG6Iox6iEX17-1ftYw