A test authorization for bitcompany.it to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
2001:8d8:1800:195::1: Timeout during connect (likely firewall problem)
Challenge update failures for bitcompany.it in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/2937994074
acme: error code 400 "urn:ietf:params:acme:error:connection": 2001:8d8:1800:195::1: Timeout during connect (likely firewall problem)