A test authorization for wifi4eu.indaleccius.com to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
5.158.218.252: Timeout during connect (likely firewall problem)
Challenge update failures for wifi4eu.indaleccius.com in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/4637222884
acme: error code 400 "urn:ietf:params:acme:error:connection": 5.158.218.252: Timeout during connect (likely firewall problem)
The IANA public suffix is the TLD of the Registered Domain
The TLD for wifi4eu.indaleccius.com is: com