The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.
http://www.charitiesregulatoryauthority.ie/en/CRA/Guidance%20for%20Charity%20Trustees%20-%20July%202017.pdf/Files/Guidance%20for%20Charity%20Trustees%20-%20July%202017.pdf