Apple processes all App Store refunds through their online portal:
Go to Apple's refund portal at reportaproblem.apple.com.
Sign in with the Apple ID you used to make the purchase.
Tap or click I'd like to... and select Request a refund.
Choose the reason why you want a refund from the drop-down menu and select Next.
Select Winpal from the list and tap Submit.
Google allows you to request a refund online within 48 hours of purchase:
Go to play.google.com in your web browser.
Click your profile icon in the top-right corner and select Payments & subscriptions > Budget & order history.
Find the purchase for Winpal and click Report a problem.
Select the option that describes your situation, fill out the brief form, and click Submit.
Have more questions? Contact our team at [email protected] and we'll be happy to help!