As Customer Care didn't seem to care and never replied to my ticket, I began doing some search and found out in File Commander there's a path that leads to an empty folder. Go to SDCard>Android>obb>com.glu.contractkiller3 and you'll see there are no files there. In Internal Storage, go to Android>obb>com.glu.contractkiller3 and you'll notice there's a file there. Copy it and paste in the empty folder in SDCard. Now the game is working for me, I hope it works for you, too.