Every domain name in a certificate is published in public Certificate Transparency (CT) logs. Both good and bad actors scan those. It is not possible to keep your domain name hidden from bots and scanners.
I understand this, however I still have my reservations.
nothing you extracted from them says anything useful. Since it is using Certbot you could look into the log file whose name it gives.
I checked through all of my logs and even did a purge to re-run it again (still getting internal error from Let's Encrypt). The log files that are created have nothing down in them. The only thing I see while running NPM is that it fails at Let's Encrypt.
As for Caddy, none of that log is very helpful either.
This is all Caddy gives me, again, failing at Let's Encrypt
There is almost certainly a general comms or server config problem on your end. With more info maybe we can help locate it.
The info I provided was deemed not "useful". What more info do you need and where would it come from? I provided what logs and errors I'm getting on my end.