You seem to have IPv4 and IPv6 records for that name and the server is likely not configured for IPv6 (returns 404). Looks similar to Certbot - IPV6 Address on Domain Misconfigured and Challenges Fail (Prefer IPV6)
You seem to have IPv4 and IPv6 records for that name and the server is likely not configured for IPv6 (returns 404). Looks similar to Certbot - IPV6 Address on Domain Misconfigured and Challenges Fail (Prefer IPV6)