In the documents has been mentioned:
Android purchases can be refunded directly through the RevenueCat dashboard.
I have performed a sandbox purchase (non-recurring, non-subscription) within the android/flutter app. The purchase was successful and I can see the purchase in RevenueCat dashboard ( customer: $RCAnonymousID:bfe8546d439b47bd849b2235e93f0e59 ) but there is no “refund” button neither in the dashboard overview page nor in the customer profile page.
(From the logs:) 
Consuming purchase with token phibohcmjclffkpkopkjlbag.AO-J1Ozy9REJrpu5UcdtOteFugJtIsyz1xvq2566sMpGjELrSLh_N1QhoGjE9D82o7yt4qJRVjpbIt4MQm8Ofnmalg6fEBx2zg
