a) The first option is to go to the app’s Settings screen (tap the gear icon on the main screen, at the bottom right); it will ask you a question, select Yes. Go back to the home screen and re-enter the game. If that did not fix it, let’s try the next option.
b) Sometimes the installation is not done correctly because of communication issues, but don’t worry, it is very easy to fix. Just delete the app and reinstall it. Don’t worry about the payment, you will not be charged again, since the payment is made only once. To delete it, just press and hold the app icon until it starts to “wiggle”, and then reinstall it: go to the App Store, search for “Lee Paso a Paso” and install it again. Do it with the same Apple account you used to purchase it. Once it is reinstalled, open the game and check it.