To renew a letsencrypt certificate first you need to have a valid license for your webuzo panel !
For renewal you need to run the following command in putty console or via cronjob:
Renew for all domains:
/usr/local/apps/php56/bin/php /usr/local/webuzo/cli.php --lets_encrypt --action=renew_all
Renew for a specific domain (ex: mydomain.tld) :
/usr/local/apps/php56/bin/php /usr/local/webuzo/cli.php --lets_encrypt --action=renew --domain=mydomain.tld
To install a certificate for a domain (ex: mydomain.tld) use :
/usr/local/apps/php56/bin/php /usr/local/webuzo/cli.php --lets_encrypt --action=install --domain=mydomain.tld
For revoking a certificate for a domain (ex: mydomain.tld) use :
/usr/local/apps/php56/bin/php /usr/local/webuzo/cli.php --lets_encrypt --action=revoke --domain=mydomain.tld