I have reached out to the host and they are blocking noc1.wordfence.com.
I have since changed hosts because of this blocking and wordfence is working on the new host.
When I run https://noc1.wordfence.com/. I get
{“errorMsg”:”Wordfence API error: Your site did not send an API key when contacting the Wordfence servers.”}
I sent a diagnostic report by email.