Hi,
This warning shows off if you use http:// protocol with
Image, iframe, CSS or JS file loading (except <a href="
www.google.com"> something </a> everything must be https:// Only <a href=""> can be http:// )
Looks like shopping cart has these kind of links that break the https:// encryption.
Open your shopping cart, then see "source codes" and search for all http:// links. Correct them with https:// (except <a href=""></a> links, even <img src=""> must be https:// got it?)
As i am seeing in your source codes:
<l-ink href='http://fonts.googleapis.com/css?family=Carme' rel='stylesheet' type='text/css'>
This line is broken the https:// protocol, because it loads the CSS with http://
This line should be:
<l-ink href='https://fonts.googleapis.com/css?family=Carme' rel='stylesheet' type='text/css'>
Find out what loads this line and change its http:// to https://
Also i am seeing this:
<!--[if IE]>
<i-frame style="width: 293px; height: 535px; margin: -1px -4px 0 -4px;" frameborder="0" border="0" src="http://www.facebook.com/plugins/likebox.php?locale=en_GB&href=https://www.facebook.com/Topiaryball&width=300&colorscheme=light&connections=50&stream=true&header=false&height=820" scrolling="no" frameborder="0" allowTransparency="true"></iframe>
<![endif]-->
and
<i-frame src="http://www.facebook.com/plugins/like.php?href=https%3A%2F%2Fwww.facebook.com%2FTopiaryball&layout=standard&show_faces=false&width=960&action=like&font=arial&colorscheme=light&height=30" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:960px; height:30px;" allowTransparency="true"></iframe>
Change their URL with https:// as well
But again, you need to figure out where those lines come from.