Issues with letsencrypt-for-cpanel.mobi access could stem from improper redirect settings between different versions of the site. Check the following links for alternative routes:

http://letsencrypt-for-cpanel.mobi http://www.letsencrypt-for-cpanel.mobi https://letsencrypt-for-cpanel.mobi https://www.letsencrypt-for-cpanel.mobi

Or return to the current status page of letsencrypt-for-cpanel.mobi.