To save your progress, you need to log into your account. You can do the following:
Open the application.
Navigate to the "Profile" tab in the horizontal menu at the bottom of the screen.
Locate the "Sign Up or Log In" button at the top of the page.
Click the "Sign Up or Log In" button.
We support logging in through registered email, as well as direct third-party login methods including Facebook, Google, Apple ID, and more.