The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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://wellsouthprimaryhealth-my.sharepoint.com/:v:/g/personal/carol_atmore_wellsouth_org_nz/EXKwOZljD_RKuQlEsrhDDrMBt_c7Eo1nX2wRE-e1QkZCtg