"If you wish to claim a refund, you can do so within 30 days following your purchase of our Services. We do not grant refunds for recurring subscription payments if you cancel the Services after the renewal unless applicable law provides otherwise."
This and other conditions of our service can be found in our Terms of Service.
Note: Please bear in mind, that we cannot issue refunds for the purchases made through Apple's App Store or the Google Play Store. However, you can contact App Store or Google Play Store support for a refund.