Try reinstalling but before opening put the phone in airplane mode... Apparently when the game connects to the internet it undoes the crack.

on Samsung Galaxy Note 2:

removed old version from market.
verified data files are removed.
Installed this version while no network connections are available - still locked.

removed this version.
verified data files are removed.
Installed this version while in airplane mode - still locked.

on Samsung Galaxy Note 2:

removed old version from market.
verified data files are removed.
Installed this version while no network connections are available - still locked.

removed this version.
verified data files are removed.
Installed this version while in airplane mode - still locked.

if u already downloaded the game once and ran it and everything was still locked...uninstall it restart your phone and then put your phone in airplane mode reinstall and open the game...see if it works then