I archived and deployed my apk in Visual Studio to the Google play store but it wouldn\'t let me continue with Beta rollout and the only message on the beta rollout page was
It also causes because of Xamarin.Android 9.1 which is the last version that supports the armeabi architecture.
In my case,armeabi-v7a
& arm64-v8a
were already checked but I still had the same issue.
So I followed the guide here: https://github.com/xamarin/xamarin-android/blob/master/Documentation/guides/messages/xa0115.md
It worked for me!