If I want to open that folder or path: /etc/letsencrypt/archive with Filezilla or Putty, it shows me permission denied.
What could be the problem here?
What is the purpose of the /usr/share/ca-certificates/mozilla folder and the certificates in there?
Please open a new thread for your specific problem. And you will get support there as well. Looks like the Linux basics are missing.
We should not fill this important thread with things like that.