The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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/407170f0-a628-43c1-abdd-3d9e4346de5c?j=eyJ1IjoiMXMycmlmIn0.IImagkNbXT9WkA9xccfvjZOf_e7trO2AgjpcuPI6nvY