If you're referring to purchases you've made in-game using Diamonds, Coins or Battle Tokens, this is the correct article. If you're referring to purchases made with your credit card, please follow this link.

If you're unable to make purchases using in-game currency, the most likely explanation is that there has been a communication failure between your device and our servers. Since your purchase needs to be registered on the game server, if the internet fails to communicate this transaction, the in-game purchase will not go through.

To fix this problem, please follow the instructions located in this article.