KingUser, please go to kinguser settings and then go to the root authorization setting then click Remove Root permission. Then Uninstall KingUser because at this time we don't want that anymore. After doing that download the PingPong root apk & install it. It will automatically install the SuperSU and follow the instructions on the screen. It is easy to use. Anyone can root the device without any doubt. Once it is finished. Then activate it, If you already rooted the device it will appear a error message and exit the program automatically. If you have internet connection then click Download Data to update the information. Then click Get Root button, allow the permission. Once its over you need to reboot the device. After the successful rooting, uninstall the PingPong root app from your device.