
Hi, this is CameraFi2 team.

From November 2019, all app updates on Google Play have been required to target API level 28 or higher.
(source: https://android-developers.googleblog.com/2019/02/expanding-target-api-level-requirements.html)
- Android 10 smartphones CANNOT connect a USB cameras like webcams, etc in the app from the Play Store.
- People who use the Android 10 device and broadcast live with webcams, DSLRs, camcorders, and etc., can download the app with target API Level 27 by clicking "APP DOWNLOAD" below;
Thank you.
from. CameraFi2 team