1) If I change the number of products in the shopping cart, automatically sending bran type, select devo disappears and again, and in this case not allow me to select, that is, I select it and not saved.
2) If I continue on to try to complete the order. At the time I confirm the order, the system does not end in the process and me a text appears: "data errata" or "wrong date" which prevents me confirm the order.
Any solution ?, thanks, greetings ...

