Have had this running great for years. Today tried to add a subdomain, it adds but won't allow to add letsencrypt certificate. Tested with a dry run it only detects the actual existing websites and will renew the existing websites. I have the proper cname and A Record for the subdomain. The subdomain content can be viewed using http from anywhere so it isn't a DNS or unreachable issue. It is a very weird situation to which one I really need some help. The server is Ubuntu 20.4.4 LTS and up to date. Certbot was upgraded to 1.28.0 (because I thought it could be the issue of being too outdated) using snap and works fine. I'm using apache 2.4.41.. I'd very much appreciate any thoughts on this issue. Thanks!