cdn.233.momobako.com has an A (IPv4) record (47.90.253.246) 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://cdn.233.momobako.com/.well-known/acme-challenge/letsdebug-test": dial tcp 47.90.253.246:80: connect: connection refused
Trace:
@0ms: Making a request to http://cdn.233.momobako.com/.well-known/acme-challenge/letsdebug-test (using initial IP 47.90.253.246)
@0ms: Dialing 47.90.253.246
@8ms: Experienced error: dial tcp 47.90.253.246:80: connect: connection refused
A test authorization for cdn.233.momobako.com to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
DNS problem: SERVFAIL looking up A for cdn.233.momobako.com - the domain's nameservers may be malfunctioning