Open Settings in the app and tap "Restore Purchases". This will restore your Havoc Pro purchase if you've bought it previously.
Game progress is stored locally on your device. If you deleted and reinstalled the app, local progress cannot be recovered. However, your Havoc Pro purchase can always be restored through Apple.
Free players get a checkpoint saved every 5 levels. Havoc Pro players get a checkpoint at every level. When you lose, you can retry from your last checkpoint.
Pong Havoc is a single-player game against the CPU. You can challenge friends by sharing your score and challenge code from the game over screen.
For bug reports, feature requests, or other questions: