every time I launch the script to renew my certs, it creates a new folder like this
/etc/letsencrypt/live/acme.org-0002
/etc/letsencrypt/live/acme.org-0003
/etc/letsencrypt/live/acme.org-0004
it is pretty hard to use those certs if the folder always change.
isn’t it possible to renew certs always in the same folder like
/etc/letsencrypt/live/acme.org
This probably means that the destination of some of the symlinks inside /etc/letsencrypt/live has been changed. Could you check with a command like sudo ls -lR /etc/letsencrypt/live?
The other command does produce a forced renewal and might be useful in some narrow circumstances. While I agree that renew is preferable the majority of the time, I don't think the use of this command explains the behavior that @sblantipodi is reporting; it's quite possible that renew will do the same thing.