codename2221.tk has an A (IPv4) record (22.214.171.124) 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 codename2221.tk/126.96.36.199: Get "http://codename2221.tk/.well-known/acme-challenge/letsdebug-test": context deadline exceeded
@0ms: Making a request to http://codename2221.tk/.well-known/acme-challenge/letsdebug-test (using initial IP 188.8.131.52)
@0ms: Dialing 184.108.40.206
@10000ms: Experienced error: context deadline exceeded
A test authorization for codename2221.tk to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
220.127.116.11: Fetching http://codename2221.tk/.well-known/acme-challenge/pYLnFjJ5V9OzG2foc1eDoZUEjciPbjHsAjB0K3jTTtM: Timeout during connect (likely firewall problem)