Dear,
I found another approach that …
sudo certbot certonly --cert-name example.be -d example.be,www.example.be,jitsi.example.be,etherpad.example.be -w /var/www/_letsencrypt
Check
certbot-auto certificates or https://www.ssllabs.com/ssltest/analyze.html?d=example.be&latest
This ticker can be closed ! Thanks