The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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://links7.mixmaxusercontent.com/gxwWXrtc6mWxDoGPh/l/qOITPh1Z4H4yzlAFo?messageId=nO2yHPCB4cos64YRL&rn=iIXZ39GUgUmckJXalRkI&re=iUWau82YvNWZyFGbjBkcld3bwRmI