lmkecloud.net has an A (IPv4) record (203.211.105.53) 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 lmkecloud.net/203.211.105.53: Get "http://lmkecloud.net/.well-known/acme-challenge/letsdebug-test": dial tcp 203.211.105.53:80: i/o timeout
Trace:
@0ms: Making a request to http://lmkecloud.net/.well-known/acme-challenge/letsdebug-test (using initial IP 203.211.105.53)
@0ms: Dialing 203.211.105.53
@10002ms: Experienced error: dial tcp 203.211.105.53:80: i/o timeout
A test authorization for lmkecloud.net to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://lmkecloud.net/.well-known/acme-challenge/siLpbLXdcJOuF-3jBSRdhvIyvODOyobEsTijrQ22-Mw: Timeout during connect (likely firewall problem)