Hope someone can help. I will soon have to reinstall my ssl certificate for my main shop so i decided i would try the free Let's Encrypt SSL Certificate on a shop that is almost obsolete 1.9 version site first. I installed the Let's Encrypt SSL Certificate via my hosts plesk interface (all seemed to simple. Just a couple of clicks). changed the configuration web setting for secure to https. But when i go to the checkout pages i am warned via chrome that it is not secure. Am i missing something in the configuration?