Rank 2: Process
New DNS record was added without any notice, it is causing issues with subdomains and our issue is mostly with letsencrypt.org, please fix asap.
Appwrite is using only certainly.com as Authorized CA, custom subdomains are then blocked from generating certificate with letsencrypt.org
https://acme-v02.api.letsencrypt.org/acme/chall/221020240/577280769517/Z5rloA
Appwrite should only append certainly.com if it's missing from CAA records, now it incorrectly overwrote previous CAA with value only for certainly.com.