IMPORTANT NOTES:

Congratulations!
Your certificate and chain have been saved at /etc/letsencrypt/live/pegasus37.no-ip.info/fullchain.pem. Your cert will expire on 2017-10-28. To obtain a new or tweaked version of this certificate in the future, simply run letsencrypt-auto again with the „certonly“ option. To non-interactively renew *all* of your certificates, run „letsencrypt-auto renew“

Your account credentials have been saved in your Certbot configuration directory at /etc/letsencrypt. You should make a secure backup of this folder now. This configuration directory will also contain certificates and private keys obtained by Certbot so making regular backups of this folder is ideal.