Ensure you're using the most recent version of Bonza by downloading any updates from the App Store.
Low storage can cause issues with Bonza, we recommend leaving at least 1gb free. To check, go into your device settings, tap on “General” and then navigate to “Usage”. Try deleting some unnecessary data (we suggest moving photos to your computer, or removing unused apps).
If you still don’t see your coins, send an email to email@example.com tell us which coin pack you bought and we will get back to you as soon as we can.