The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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://substack.com/redirect/f6329aa8-3c43-4806-bfa0-fafbd8a428d9?j=eyJ1IjoiMXMycmlmIn0.IImagkNbXT9WkA9xccfvjZOf_e7trO2AgjpcuPI6nvY