Add support for 64-bit devices in the Skype for Business App SDK for Android
Starting August 1, 2019, apps published on Google Play will need to support 64-bit architectures, see https://developer.android.com/distribute/best-practices/develop/64-bit.
Lacking the support, apps built upon the Skype for Business App SDK for Android vill only support devices that do not run Android 9 Pie or later.
Zoltan Hübsch commented
Reference on that last section: https://android-developers.googleblog.com/2019/01/get-your-apps-ready-for-64-bit.html