The customer authorization (provided in the link you clicked) is out of date, and does not entitle you to use the Blended Threat service.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://smex-ctp.trendmicro.com:443/wis/clicktime/v1/query?url=https://scanmail.trustwave.com/?c=15517&d=ytWS4S-jDgF26MOYuihOKXAbXyJkVM_QgWNbBO0wrQ&u=https://smex-ctp.trendmicro.com:443/wis/clicktime/v1/query?url=https://scanmail.trustwave.com/?c=15517&d=2qiR4fyB-lh2EfPSzws8pOdc7ycNr74AxLnAtQPntw&u=https://www.healthpoint.co.nz/covid-19/lakes/&umid=a39a7260-d9ad-480b-b96d-34fe12a319d6&auth=023032eb2aa413285faef5bedb96c5d1232e198d-b80faa1a610d3f821d7ff159d7739f5fa016ff6a&umid=ee562b92-3fdb-45d3-8102-f3fad9a1f6d7&auth=023032eb2aa413285faef5bedb96c5d1232e198d-b0335acb1f8af0b9bc44a2318619f52cd99cf7d7