cloud.sysmex-europe.com has an A (IPv4) record (213.209.110.43) 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://cloud.sysmex-europe.com/.well-known/acme-challenge/letsdebug-test": EOF
Trace:
@0ms: Making a request to http://cloud.sysmex-europe.com/.well-known/acme-challenge/letsdebug-test (using initial IP 213.209.110.43)
@0ms: Dialing 213.209.110.43
@172ms: Experienced error: EOF
A test authorization for cloud.sysmex-europe.com to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://cloud.sysmex-europe.com/.well-known/acme-challenge/FPGiHJNDFu4aakXnfgc9X_EVT2EXZ5DAzp_APG9fnqY: Error getting validation data
The current status as reported by the Let's Encrypt status page is Service Disruption as at 2021-04-13 04:19:34.745 +0000 UTC. Depending on the reported problem, this may affect certificate issuance. For more information, please visit the status page.
https://letsencrypt.status.io/