@Bhavik Log in to your site and aliexpress both, just click on the customer details field of the abandoned item. Details will expand, click order manually and it will take you to aliexpress. Just follow instructions and place the order. Make sure shipping details are in order.
After couple of days once you receive the tracking number from aliexpress, log in to your wp and aliexpress both, input aliexpress tracking number in Edit order and Tracking number window. Just see the picture to find where you have to do all this