Have you made a mistake or have you changed your mind about your order?
Do not worry, if it has not been packaged yet, you can cancel it without problems.
Log in to your user account and click on "History of my orders"
Then enter the details of the order you want to cancel.
In the "Add a message" section, say you want to cancel the order.
Once the order has been canceled, you can not go back, but you can always place a new order.
It is not possible to change your address after placing the order but you can cancel it and write another address for the next one.