Once an order has been placed on the Massdrop platform, the ability to change the shipping address can depend on various factors, such as the status of the order and whether it has already been processed for shipping. Generally, if the order is still in a pending state or has not yet been fulfilled, there may be options available for modifying the shipping address. However, if the order has already been processed or is on its way, changing the address may not be feasible. It is advisable to check the order details on the current web page for instructions or options regarding address changes. If assistance is needed, additional resources might be available on the website to help navigate this situation.