Hi,
This warning that you get was caused by your server/php configuration. Your server doesn't support secure connection to our server. You have to enable openssl extension for PHP and restart http server.
Your EPESI installation connects to our server to retrieve store packages. It tries to do this using https, but if your php doesn't support this, then you can allow to use not encrypted http protocol.
If you want to reset this setting then go to the Module Administration/ Store -> License Key (button on the top of the page) -> SSL settings (same place as previous)
It's important to use https connection to prevent your license key disclosure.
This setting doesn't have any impact on connection between your browser and your server.
Regards,
Adam
