With the 3.2 update, we will be increasing the minimum required version to Kitkat (Android 4.4). Please take a break and check your current version of Android. You’ll need to update before we release 3.2 or you will be locked out of the game. For more information about how to update your Android version, please see Google support here.
Also, Google will be dropping support for Google Plus officially on March 7, 2019. In order to prevent your account from being at risk or lost, we are advising that you ensure all of your accounts are attached to Facebook and/or Google Play Games prior to the 3.2 update.
We are planning to release version 3.2 during the week of January 21.