*scratches head confused*

Okay so I've installed this add on... and all seems to work fine (nice little list of things to fill out, no pages of nonsense needed any more)
but once I fill it out and click continue...nothing happens?

No payment method or something like that...It just reloads the cowoa page...

Does anybody know what is happening here?

Link to site is http://www.ad-mineraal.nl/skullshop

For testing purposes when ordering please add Capital Letters TEST in first and last name fields.

With kind regards,

Juliet van Ree