clefus.homeip.net has an A (IPv4) record (184.19.213.21) 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.
Get "http://clefus.homeip.net/.well-known/acme-challenge/letsdebug-test": EOF
Trace:
@0ms: Making a request to http://clefus.homeip.net/.well-known/acme-challenge/letsdebug-test (using initial IP 184.19.213.21)
@0ms: Dialing 184.19.213.21
@286ms: Experienced error: EOF
A test authorization for clefus.homeip.net to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
184.19.213.21: Fetching http://clefus.homeip.net/.well-known/acme-challenge/ucLiAR8Hfo_sotJ0pqmtPfaiOSHmwisNajU6OJf5XUo: Error getting validation data