To save your progress across multiple devices, tap on the Facebook ‘Connect’ button on the Bingo Pop title screen.

You can also connect to Facebook from the Settings menu of the game and selecting the ‘Connect to Facebook’ option. As long as you are logged in to your Facebook profile in Bingo Pop on any of your devices, you can resume your progress from where you left off.
 
If you're playing on a compatible Apple iOS device, you can also secure your game progress by signing in with Apple. The button for Apple sign-in is available on the Bingo Pop title screen and in the Settings/ Options menu of the game.

Please note: Facebook  and Apple Sign-In are the ONLY Bingo Pop account-securing options; your Google Play or Amazon account will not save your game progress.