You must make sure that you log in to the 2020 version using the same Google Play or
GameCenter account that you used while playing the 2019 version. This is not the same as backing up your account with email or Facebook. Those have nothing to do with the reward process.

If you have already created your new account before logging in to GameCenter or Google Play, please force-quit the app, log in to the associated Gamecenter or Google Play and relaunch MLB Tap Sports Baseball 2020. The game will automatically match you and provide the
welcome package.

NOTE that more is coming in the way of connecting to your TSB19 account! KEEP checking our social media for details.