How to enable HTTPS / SSL on prestashop 1.6. Pretty easy when you know how. Here is how you do it.
Preferences > General
Please click here to use HTTPS protocol before enabling SSL
Enable SSL > YES
HTTPS not showing
Did you click save on the enable SSL page?
Disable SSL manually (if something goes wrong)
Access the configuration table, and locate PS_SSL_ENABLED. It should be set to 1, crush it to zero. This way, you’ll be able to access your site again, but of course you’ll have no SSL.
It should now show SSL enabled for checkout and my account page.