Ensure you're using the most recent version of Bonza by downloading any updates from the App Store.
GOOGLE PLAY STORE
Ensure you are logged into your correct account in the Google Play App Store on your device, and that your Google Wallet payment method is correct.
If you’re still having issues, send an email to firstname.lastname@example.org and include which purchase/s you are having issues with and which version of android you have. We will get back to you as soon as we can.