The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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://click.email-commonwealthfund.org/?qs=c8a70008c920a138101c6e76f96d9aeedae6452110c9cdfca20e8c756601e9e6e6d56a3cd7498323422173b81c7c8378