I have a paid application; a user that has already bought this app more than 15 minutes/48 hours ago (I didn't get what's the new time limit for the user to ask for a refund) is helping me a lot with some issues and has made me able to improve my app. I want to thank him by refunding him the money he spent buying my paid app.
In Google Checkout in each order there's the "refund some money.." button: if I refund him by hitting this button, the app will be deleted from his smartphone / he will lose future updates? If the answer is YES, how can I give his money back but make him able to keep my app and be able to get future updates?
ps: I know that i can ask him his Google Checkout / PayPal account and transfer him the sum, but I'd like to know if there's a better way.