Let's Debug

Test result for clp.io using http-01

Error
clp.io has an A (IPv4) record (116.203.76.146) 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://clp.io/.well-known/acme-challenge/letsdebug-test": dial tcp 116.203.76.146:80: connect: connection refused

Trace:
@0ms: Making a request to http://clp.io/.well-known/acme-challenge/letsdebug-test (using initial IP 116.203.76.146)
@0ms: Dialing 116.203.76.146
@99ms: Experienced error: dial tcp 116.203.76.146:80: connect: connection refused
A test authorization for clp.io to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
116.203.76.146: Fetching http://clp.io/.well-known/acme-challenge/Jk6KtrUT41_tuFL3BwQZZ2tX33wmNKmmIJAqf8bpqGU: Connection refused

Submitted Dec 11 04:07:46 2023. Sat in queue for 4ms. Completed in 2s. Show verbose information.