If you are unable to download our app after purchased from the Google Play Store, please follow these steps to clear cache and data of Google Play Store and Download Manager:
  1. Go to Menu > Settings > Applications > Manage Applications
  2. Click All
  3. Select Google Play Store
  4. Select Clear Data and Clear Cache
  5. Select Download Manager
  6. Select Clear Data and Clear Cache
  7. Exit menu and try to download the app again