Let's Encrypt with nginx

Hi, I wonder if there is anyone who able to properly set up Let's Encrypt feature with nginx? I followed suggested steps but I couldn't make it happen. - activate Let's Encrypt in the settings - as admin, goto Configuration -> select your distro -> select Webserver -> select your software - copy'n'paste the acme.conf part of the configration template - restart/reload webserver Then I run the cron php /var/www/froxlor/scripts/froxlor_master_cronjob.php --letsencrypt
In the /etc/nginx/sites-enabled/10_froxlor_ipandport_SERVERIP.443.conf I've commented the line  server {         #listen    IP:443 default_server; Has solved my problem. So, how can I set this line from the panel as comment out? I guess If I run the cron, the line will be activated again.