[Woocommerce] Error for variabile products

Hi,

I a problem with the price for a variabile product doesn’t change dinamicaly in the “web page” but only the “product page”.

If you try to change the “Tipology” in this page the price doesn’t change:
http://think-design.ch/international-network-week-in-abu-dhabi-test/
But if you try in directly in the product page it works correctly:
http://think-design.ch/prodotto/international-network-week-abu-dhabi-2017/

Can you help me?

Regards
Alex