Hi!
There is a required field (red star) in shipping state (I think it's that in english). Default is "choose" and user can choose and continue. I think there is a bug because customer can leave the drop down menu to choose and continue. The result is that shipping is not calculated and is not even an option if it's leaved to "choose".
(It's in finnish "valitse" is "choose" and "alue" is "state)