Total Posts: 26
I also solved the problem by myself. Problem is the images. Do it as;
1- Open the checkout page
2- Most probably you have some pictures on this page.
3- Right click these images one by one and select view image (or view background image)
4- The image will open
5- Check if the new only image page has a lock with exclamation or not
6- If it has, eable template hints to check where this picture is inserted
7- Now go to your code, find the page with this image (mine was on footer), check the code if the link to the image is written as http://www.example.com/images
8- If so, change the http to https or use ../images/.. (Do not use full link with http)
9- Clear cashe
Taa taaa! you have you padlock without any notification!