Sometimes, when placing an order for your customer you may face the below issue:
a product is not found on AliExpress.
In this case look for the same product from a different supplier and reset the product in your WordPress dashboard. By doing this, you will be able to continue selling this product in your store, but just purchasing it from another supplier.
You can use our Extension's option to find the same product from other suppliers:
If you do not find a product replacement, you should cancel the order and issue a refund to your customer.
In future, please make sure you run the update of the products to avoid such issues: How to update the products.