smilebags.duckdns.org has an A (IPv4) record (123.243.200.117) 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 smilebags.duckdns.org/123.243.200.117: Get "http://smilebags.duckdns.org/.well-known/acme-challenge/letsdebug-test": context deadline exceeded
Trace:
@0ms: Making a request to http://smilebags.duckdns.org/.well-known/acme-challenge/letsdebug-test (using initial IP 123.243.200.117)
@0ms: Dialing 123.243.200.117
@10000ms: Experienced error: context deadline exceeded
A test authorization for smilebags.duckdns.org to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
123.243.200.117: Fetching http://smilebags.duckdns.org/.well-known/acme-challenge/hocdpuBD4G5Ok2kOsPC5lOG9AYUlTBt_h5RoUkUQRH8: Timeout during connect (likely firewall problem)