Maybe your Device is 32 bit or on android, please take note that this is the PC version if your downloading it on Android then you can download the Android version on this website too...If you're using PC but wont work the try checking if your device is 32 bit or 64 bit this mod only works for 64 bit.If you're using IOS then i dont think you can download it since its not available there.Thank you :D!