You can update your shipping address at any time in your account.
To update your shipping address
Step 1: Login to your account
Step 2: Select the “Manage Subscriptions” button
Step 3: To the right of your address click on the "Edit" button
Step 4: Update your shipping address (you can also update your billing address if you'd like)
Step 5: Scroll to the bottom of the page and select "Save" when finished