So I just tested it with an other browser (IE), and it is the same result.
I go to webshop > piercingswebshop, I chose a piercing and click 'add to basket'.
No I see a screen with a register form, a paymentselection and the basket.
The only available button is 'register' in the registration form. Nothing like 'next' or 'confirm order' or something at the end of the page.
When I fill in the registration form, and clik 'register', then I get a pagereload but nothing is changed on my page. No 'next button' or confirmation message or whatsoever.
Am I expecting something wrong?