I can confirm that @mnordhoff’s on the right track with his reply (Thanks!). There’s no need to whitelist
www.joshualoganmoore.com, it isn’t being blocked.
Can you describe what Let’s Encrypt/ACME client you’re trying to use to get your certificate? What was the command you ran or process you were following when you saw the policy error? There’s probably a place where it somehow got confused into thinking the string
"joshua logan moore" was the domain name you wanted a certificate for instead of