SHELL

certbot add new domain

sudo certbot --apache -d your_domain -d www.your_domain

add domains to certbot

sudo certbot --expand -d newsub.existingdomain.com -d newsub.newdomain.com

add new domain again with certbot

# Incase you made new changes to the conf
sudo systemctl reload nginx
sudo certbot certonly --nginx --webroot --webroot-path=/var/www/html --email mail@email.com --agree-tos --no-eff-email --staging -d example.io  -d example.io --break-my-certs