To fix these errors, please make sure that your domain name was
entered correctly and the DNS A/AAAA record(s) for that domain
contain(s) the right IP address. Additionally, please check that
your computer has a publicly routable IP address and that no
firewalls are preventing the server from communicating with the
client. If you’re using the webroot plugin, you should also verify
that you are serving files from the webroot path you provided.
I have added real ip server address to A record, due permission issue my cronjob could not run in ubuntu server. No i m facing this issue, Bcoz this my production app server, if the certificated is not renewed within 15days, all my customer’s will face serious issue, all my api’s is point to this domain.