APK Signature different in Unity and Android Studio

Hi,
Our app have too many references to compile with a simple dex file.
We tried to export the project to android studio and compile. It worked.
We tried to install the app on a device that already have the app installed, and it failed because it says that the signatures does not match.
We used the exact same keystore with same alias, same passwords.

This is a big deal because now we can’t update our app anymore. Please help

Hey friend ,
Could you please tell me how can i compile it using Android Studio.
i know that how can i extract google android project from unity but i don’t compile this project on Android Studio
Thanks for your help