Problem binding to port 80: Could not bind to IPv4 or IPv6

[_az]

The problem for both of you is that you are running the standalone authenticator, which conflicts with your Apache server.

So,

@sebyastiens

This is what I get when running that command :

You should use

 sudo -H ./letsencrypt-auto --apache -d serrurier-secours.ch -d www.serrurier-secours.ch

@fayaz

[root@www sites-available]# certbot renew

and you should use

certbot renew --cert-name sonicfiber.pk-0001 --apache