You can do a full or partial refund for any transaction in the Control Panel.
- Find the transaction receipt. Either from their member detail history or from the payment report.
- On there receipt page hit the 'refund' button.
- A modal will pop up. Either leave the full amount to be refunded or adjust to a lesser refund amount.
- Hit 'Confirm'
Stripe will also refund you the transaction fee from the original purchase. They are so nice!