Let's Debug

Test result for pqr.neroth.org using http-01

Error
pqr.neroth.org has an A (IPv4) record (173.228.91.174) 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 pqr.neroth.org/173.228.91.174: Get http://pqr.neroth.org/.well-known/acme-challenge/letsdebug-test: context deadline exceeded

Trace:
@0ms: Making a request to http://pqr.neroth.org/.well-known/acme-challenge/letsdebug-test (using initial IP 173.228.91.174)
@0ms: Dialing 173.228.91.174
@10000ms: Experienced error: context deadline exceeded
A test authorization for pqr.neroth.org to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://pqr.neroth.org/.well-known/acme-challenge/yA3D9TYU-5lNFaRrXsj_p4ee2hZSBD6rJCl5S1JRU7I: Timeout during connect (likely firewall problem)
Debug
Requests made to the domain
Request to: pqr.neroth.org/173.228.91.174, Result: [Address Type=IPv4,Server=,HTTP Status=0], Issue: ANotWorking
Trace:
@0ms: Making a request to http://pqr.neroth.org/.well-known/acme-challenge/letsdebug-test (using initial IP 173.228.91.174)
@0ms: Dialing 173.228.91.174
@10000ms: Experienced error: context deadline exceeded

Debug
A and AAAA records found for this domain
pqr.neroth.org. 0 IN A 173.228.91.174
Challenge update failures for pqr.neroth.org in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/21294700
acme: error code 400 "urn:ietf:params:acme:error:connection": Fetching http://pqr.neroth.org/.well-known/acme-challenge/yA3D9TYU-5lNFaRrXsj_p4ee2hZSBD6rJCl5S1JRU7I: Timeout during connect (likely firewall problem)
Debug
The IANA public suffix is the TLD of the Registered Domain
The TLD for pqr.neroth.org is: org
Debug
1 Certificates contributing to rate limits for this domain

Serial: 290725808035234204860758712120779787973311
NotBefore: 2019-01-22 00:02:18 +0000 UTC
Names: [pqr.neroth.org]

Debug
The current status.io status for Let's Encrypt
Operational

Submitted Jan 26 14:11:27 2019. Sat in queue for 2ms. Completed in 23s. Hide verbose information.