A Let's Encrypt certificate will be obtained for this domain.
The AAAA, A and CAA records for the domain must resolve to the same values as ht.niver.niv.re.. This can be done by creating a CNAME record pointing to this domain for a non-apex domain, or using a nonstandard "ALIAS", "synchronized" or "flattened CNAME" record for an apex domain. You may alternatively manually copy records values, but it'll require a manual update when these values change.
Required values (for manual copy)
AAAA-
2a01:e34:ec23:b760::e A-
78.194.59.118 CAA(useful for testing accounts only)-
0 issue "letsencrypt.org; validationmethods=http-01; accounturi=https://acme-staging-v02.api.letsencrypt.org/acme/acct/100819254" CAA(useful for approved accounts only)-
0 issue "letsencrypt.org; validationmethods=http-01; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/1077805337"
Also, to prove that you own this domain, its subdomain _auth must have a TXT record equal to niver.niv.re_domain-verification=7b8717e7-01419934ef48c3c13c8e8a3c37485e8b when the form is being processed.
This form won't be accepted because you need to log in first.