https://www.drupal.org/node/2316557 is a related issue where this person solved the problem using commerce Stripe to accept credit cards.

I am using GoDaddy on Linux Shared hosting and I have an SSL certificate through them; however, I do not know how to turn it on in the php.ini file. Can someone help me with the code? All I have is this in my php.ini file.

register_globals = Off
extension=pdo.so
extension=pdo_mysql.so
$_SERVER['HTTPS'] = 'on';
$conf['https'] False

Thanks,
Josh