Well if you have Google play you likely need an account for it when it says that make sure to go into settings and be logged in it is important to remember your password. If that does not work than let me know but if not it should be easy to go to Google play and make a entire other account if in this instance a password is or may be lost. Then if you make a new account make sure to have your email and account password/info written down and remembered to avoid any further loss of progress in the current or any other games. Also there is a feature with saving, once you have an account you will see a cloud with an arrow up in the main menu tap that and you can save all your data of the game right to the cloud. If you have any further issues be sure to tell me I'll be happy to help you or anyone else out!.