Can refunds be issued on a submitted form?
Yes. From the Forms module, click on Forms. Select the form from the list.
Once opened, under Submissions, search for the form submitter.
Click on the form to open. Click on the ellipses (three vertical dots) to see the drop-down menu. Click on refund and select the Refund Reason prior to submitting.
For more information on refunding a payment, click here.