Unfortunately, you are unable to edit existing orders.
If the initial order amount is too low, you can do one of two things:
- Refund the initial order completely, and resend a new order for the correct amount, or
- Keep the initial order, and send an additional order for the difference in amount
If the initial order amount is too high, you can process a partial refund once it is completed.
To do this, select the three blue dots on the far right-hand side of the order listing, then select REFUND. You can edit the amount that you would like to refund before processing.