title: Change webroot-path of registered letsencrypt cert
body: <p>I am new with Let's Encrypt certificate. I registered my domain for a nginx server at <strong>digitalocean.com</strong> following this command</p>
  
  <blockquote>
    <p>cd /opt/letsencrypt ./letsencrypt-auto certonly -a webroot
    --webroot-path=<strong>/usr/share/nginx/html</strong> -d mydomain.com -d www.mydomain.com</p>
  </blockquote>
  
  <p>and it works fine. Then i have changed my <strong>webroot path</strong> to <strong>/var/www/xxx</strong> for my domain.
  Now when i trying to renew my letsencrypt certificate it's getting error.
  Then i rollback my webroot path, try again and the renewal works perfectly.
  Now my question is how can i change my registered <strong>webroot-path</strong> for Let's Encrypt?</p>