i believe those are certbot commands not letsencrypt commands
so you need to run certbot --apache --email suporte@suporte-app.tk --agree-tos --hsts --uir --staple-ocsp --must-staple --no-redirect -d suporte-app.tk
from what i understand on older versions of linux letsencrypt is installed
Looks like OCSP stapling was implemented in version 0.7.0 about a month after Ubuntu 16.04 was released.
If you want to install a newer version of Certbot, for now i’d suggest following the instructions to install certbot-auto for Ubuntu 14.04. (They’ll work fine on 16.04 too.)
(People are working on a PPA for current versions of Certbot, but i don’t think it’s ready for production use yet.)