Please check as below: 1. please make sure the code input correctly. 2. If still problem, please check whether installed the apk with correct version. There are two versions: Standard Version with Blue color and Plus Version with Red color. So please check which version subscription code you ordered. 3. If above not help, please contact our support email directly. 4. If bought the wrong version subscription code, please contact us to exchange for you, but need to pay the balance if change from Standard version to Plus version.