vrnw-jira.de has an A (IPv4) record (78.94.10.226) 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 vrnw-jira.de/78.94.10.226: Get "http://vrnw-jira.de/.well-known/acme-challenge/letsdebug-test": context deadline exceeded
Trace:
@0ms: Making a request to http://vrnw-jira.de/.well-known/acme-challenge/letsdebug-test (using initial IP 78.94.10.226)
@0ms: Dialing 78.94.10.226
@10001ms: Experienced error: context deadline exceeded
A test authorization for vrnw-jira.de to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://vrnw-jira.de/.well-known/acme-challenge/zGa3C-ih5aoL_B7LbLdg4Er9OVw8T2bqXYmMmbaywyg: Timeout during connect (likely firewall problem)