Let's Debug

Test result for sturtz.ml using http-01

sturtz.ml has an AAAA (IPv6) record (2604:99c0:8:2f60:223:24ff:fe08:581f) but a test request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address. You should either ensure that validation requests to this domain succeed over IPv6, or remove its AAAA record.
A timeout was experienced while communicating with sturtz.ml/2604:99c0:8:2f60:223:24ff:fe08:581f: Get "http://sturtz.ml/.well-known/acme-challenge/letsdebug-test": context deadline exceeded

Trace:
@0ms: Making a request to http://sturtz.ml/.well-known/acme-challenge/letsdebug-test (using initial IP 2604:99c0:8:2f60:223:24ff:fe08:581f)
@0ms: Dialing 2604:99c0:8:2f60:223:24ff:fe08:581f
@10000ms: Experienced error: context deadline exceeded
A test authorization for sturtz.ml to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://sturtz.ml/.well-known/acme-challenge/08VFuEiB1hbq-gQ5DSWj8M8vDWLmKMarRcXQQpqoeGs: Timeout during connect (likely firewall problem)
Debug
Requests made to the domain
Request to: sturtz.ml/2604:99c0:8:2f60:223:24ff:fe08:581f, Result: [Address=2604:99c0:8:2f60:223:24ff:fe08:581f,Address Type=IPv6,Server=,HTTP Status=0], Issue: AAAANotWorking
Trace:
@0ms: Making a request to http://sturtz.ml/.well-known/acme-challenge/letsdebug-test (using initial IP 2604:99c0:8:2f60:223:24ff:fe08:581f)
@0ms: Dialing 2604:99c0:8:2f60:223:24ff:fe08:581f
@10000ms: Experienced error: context deadline exceeded

Debug
A and AAAA records found for this domain
sturtz.ml. 0 IN AAAA 2604:99c0:8:2f60:223:24ff:fe08:581f
Challenge update failures for sturtz.ml in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/136731520
acme: error code 400 "urn:ietf:params:acme:error:connection": Fetching http://sturtz.ml/.well-known/acme-challenge/08VFuEiB1hbq-gQ5DSWj8M8vDWLmKMarRcXQQpqoeGs: Timeout during connect (likely firewall problem)
Debug
The IANA public suffix is the TLD of the Registered Domain
The TLD for sturtz.ml is: ml
Debug
1 Certificates contributing to rate limits for this domain

Serial: 263342022853350309534758042749536659145473
NotBefore: 2020-08-21 00:14:56 +0000 UTC
Names: [cloud.sturtz.ml sturtz.ml]

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

Submitted Aug 24 18:36:08 2020. Sat in queue for 2ms. Completed in 23s. Hide verbose information.