To transfer your game progress and content successfully from the previous version to the new update, we highly recommend that you sign in to any social network, for example Facebook, Google Play, or Game Center (with Apple ID), if you are above 16 years of age.
If you are under 16 years of age, please do not reset your device or delete the previous version of the game from your device. Having the previous version of the game on your device when the update happens ensures that your progress will be transferred safely.