Let's Debug

Test result for srimuang.ddns.net using http-01

srimuang.ddns.net has an A (IPv4) record ( 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 srimuang.ddns.net/ Get "http://srimuang.ddns.net/.well-known/acme-challenge/letsdebug-test": dial tcp i/o timeout

@0ms: Making a request to http://srimuang.ddns.net/.well-known/acme-challenge/letsdebug-test (using initial IP
@0ms: Dialing
@10001ms: Experienced error: dial tcp i/o timeout
A test authorization for srimuang.ddns.net to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued. Fetching http://srimuang.ddns.net/.well-known/acme-challenge/w26qrobAyyFDAu8S622wAeFE5vShS2eNv0bvA--Rf-A: Timeout during connect (likely firewall problem)

Submitted Jun 18 06:44:31 2022. Sat in queue for 2ms. Completed in 24s. Show verbose information.