You can change any order's shipping address prior to label printing.
To do this, expand the order in ReadyToShip, and edit the address fields. Then print (or update) your label.
If you do make an address change, you may wish to add a note or edit the address back in your store's original order. Changes to addresses made directly in ReadyToShip are not applied to the order in your store when we update the tracking.
Note: Order addresses that are modified in your store will not be imported by ReadyToShip, as ReadyToShip does not get notified when these changes are made. It is important to change any shipping address in ReadyToShip.