www.fleet.org has an A (IPv4) record (71.216.244.98) but a request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address.
A timeout was experienced while communicating with www.fleet.org/71.216.244.98: Get http://www.fleet.org/.well-known/acme-challenge/letsdebug-test: dial tcp 71.216.244.98:80: i/o timeout
Trace:
@0ms: Making a request to http://www.fleet.org/.well-known/acme-challenge/letsdebug-test (using initial IP 71.216.244.98)
@0ms: Dialing 71.216.244.98
@10004ms: Experienced error: dial tcp 71.216.244.98:80: i/o timeout
A test authorization for www.fleet.org to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://www.fleet.org/.well-known/acme-challenge/9-BFR5oqWr7WYmAaIJPbUsxf7rUkzHooWd-e5Uz8ZAc: Error getting validation data