Coins are added as soon as Apple confirms the payment. Make sure you are signed in with the same Apple ID and restart the game. If the coins still do not appear, email us the date of the purchase.

Open the Store from the main menu, choose the Premium tab and tap Restore purchases. Coins and the supporter pack are consumable and cannot be restored.

Campaign progress, coins and armory upgrades are stored on your device. Deleting the game deletes them.

Sign in to Game Center in the iOS Settings, then choose Online in the main menu.

Open Settings in the game and lower the graphics quality.