I tried to take a look, but the FTP information seems to have stopped working so I couldn't get in to take a look at your pages.
I have a feeling the issue is still with the confirm_cart.php page not being generated properly. Do you see the cart displayed on the checkout page? It should be there.
You may have to do this to get the checkout page cart to generate properly.
1) create a new blank page and use the display manager to add an update-able cart display on the page with your desired design.
2) once generated you can actually delete the page, you are just configuring the cart design by applying it
3) now run the checkout wizard again and the same design should be used when creating the confirm_cart.php page
When it isn't generated properly it is usually because the configuration file is corrupt and re-adding a display should correct that.