Instead of trying to uninstall it through "Settings", go to the icon in your applications, press and hold, and it will give you the option to uninstall from there. It wont work. The app has made itself a system administrator, and will then ask if you would like to manage system administrators. Hit yes. On the next screen, simply uncheck the anall app. You can then go back to the applications screen, press and hold again, and choose to delete.
I realize this question is months old, but I just had the problem myself and found myself at this thread. I'm guessing other people have too. Hope this works for you!