Installing Whatsapp on Galaxy Note Pro I have installed whatsapp in my galaxy note pro previously but uninstall a few days later. Now that I want to install back again, it says device does not support whatsapp. 

Please advise why am I able to install at 1st and not now?
Whatsapp provides the apk files to install it without the Play Store. 
The apk can be found here: http://www.whatsapp.com/android/