Where the shipping address can be modified or not depends on the order status.
1) For orders that are waiting for the supplier to confirm the order, waiting for payment, or that are waiting for the supplier to ship
The shipping addresses on these orders cannot be modified directly. Go to “All Orders,” click “request modification,” enter your request and wait for the supplier’s response.
2) For orders where the payment is still being processed
No modifications can be made until the payment is received. Please wait for the payment to arrive.