It states if you dont see the SuperSu script run in a minute then the root has failed. Then it says the reboot is done. And nothing. No SuperSu has been installed. Whats stopping my phone from being rooted and isnt SuperSu being installed?
It depends on what you're using to root it. It has to be an Android 5.0 exploit for the G3. Root exploits aren't usually universal. (Towel Root was, because it rooted in Linux, it didn't depend on the version of Android the phone was running.)