Email contact@vaultek.co. We answer within two working days. Please include your driver name (shown on the leaderboard), your device and what happened.
Close the game fully and open it again while online: a paid purchase is delivered the next time the game reaches the store. If the diamonds are still missing, email us the receipt from Apple or Google. Refunds are handled by the store you bought from: reportaproblem.apple.com or Google Play, Order history.
Progress is saved to the cloud against your device. After a reinstall it comes back on first launch while online. If it does not, email us your driver name.
Email us your driver name and we delete your cloud save and leaderboard entries within 30 days. Deleting the app removes everything stored on your device.
The game only shows a video ad when you tap an offer for a reward. There are no banners and no ads between runs.