The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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.icptrack.com/icp/relay.php?r=66277687&msgid=1127117&act=JP0A&c=361791&destination=https%3A%2F%2Fwww.fishpublishing.com%2Fcompetition%2Fshort-story-contest%2F