If you made an in-app purchase but a game didn't unlock or you didn't receive in-game resources, check the confirmation of this purchase from your app store (Apple App Store / Google Play Market / Amazon) on your email.
If you have not received such a mail, then paying the transaction was failed. In this case, you need to contact your bank.
If you received a letter, please contact us by filling out this form https://qumaron.kayako.com/en-us/conversation/new/22. Include the name of the game and upload a screenshot of the email with confirmation from your app store.
Purchases in games Jane's Farm, Divine Academy, Rise of the Roman Empire:
Go to the “Support” section in the game settings and fill out the appropriate form.