Customers might contact you to request a refund on your Asset Store package. However, because they made purchases through the Asset Store, the store manages refunds, not individual publishers.
If the user has an issue that you can solve, then you should do everything you can to resolve your customer’s issue. If your customer has a logical reason to want a refund and it doesn’t violate the Asset Store’s Refund Requirements, then you must request a refund from the Asset Store on the customer’s behalf.
Note: The Unity Asset Store does not give refunds without your authorization unless there has been a server error where the customer was charged for duplicate Assets by mistake, or another similar error.
To request a refund from the Asset Store on the customer’s behalf:
Ask the user to provide you with the invoice they received when they purchased the Asset package.
Navigate to the Verify Invoice tab of the Asset Store Publisher portal.
If you don’t see the invoice in the list, enter the invoice number in the Invoice No. text box and click the Verify button.
Once verified, submit a request to Unity, and fill out the following information:
For more information on refunds, see the Asset Store FAQ.