Google PLay autentication don't work in AAB aplications

Hi guys, I’m managing an application that uses Google Play as a verification method, the problem is that when I test the application directly on my device through an APK, everything works normally, however, when generating an AAB for the Google PlayStore and then downloading the application, I realized that the authentication did not work.

NOTE: I’m a complete beginner in Unity and I don’t understand most of the technical terms. If you could use more common language I would appreciate it.

Thanks