Hello jphilip,
Thank you for contacting us about Let's Encrypt and implementing an SSL. Our
Free SSL is issued by Comodo and is fully functional and is currently used to secure many sites. Due to this, there is currently no plans to implement Let's Encrypt.
Installing an SSL (of any kind) on your server for a site is just the first step. You must also ensure your site is serving everything over https. For example, if your website has an image with a link that has 'http' instead of 'https' the secure lock will not show. When I checked the website associated with your username I see the following images being server over http:
http://*******philip.com/jp-content/uploads/2015/06/jcp_logo_darkgrey.png
http://*******philip.com/jp-content/uploads/2015/06/jcp_splash.png
http://*******philip.com/jp-content/uploads/2015/06/jcp.png
This will cause your site to display as "not fully secure" in browsers.
Since it seems you are using WordPress, here is a link to our helpful guide on
Enabling https in WordPress for SSL. Sometimes themes/plugins will still try to server items insecurely, in this case, I recommend using a 3rd party plugin for implementing https (there are many available).
Thank you,
John-Paul