Firstly let me say I am using eCart6.1.1 the latest version available.
Taking on your suggestion I re-ran the wizard using it's default settings (no formatting what-so-ever), and found the following problems.
1. Even though I ticked the box "include shipping fields on checkout page", they still didn't show.
2. If you click on "Change Address" in the Order summary, the summary dissapears but the form still carries on and submits to PayPay, so it doesn't work.
3. The wizard creates the "summary in database" and details in database" behaviours in the pp_confirm page, not in the confirm page as you suggest ("The store cart summary and store cart details server behaviors are supposed to be applied on the confirm.php page" So they don't work.
I have attached a zip file of the pages created for you to have a look at.
Your suggestions to make this work as it should would be accepted gratefully.