As per our 60 day money back warranty you have the right to return any purchased license within 60 days of purchase and get a full refund. You do not require to name any reasons.
To request a refund simply send us an email to firstname.lastname@example.org and tell us you would like a refund. Please don't forget to mention your order ID (or anything that helps us identify your purchase).
Please note that this warranty is only valid for purchases made directly from our website (via fastspring). For purchases made in the Mac App Store please refer to Apple's refund policy.