Make a backup of your project and keep it.
1. In AndroidLauncher.java file, added the following line into the onCreate method to avoid random crashes.
getWindow().getDecorView();
2. In the root build.gradle file, comment out gretty. This is not required and causes build errors.
3. In the root build.gradle file, updated google services to 4.4.2.
4. In the root build.gradle file, updated play-services-ads to 23.4.0.
5. In the root build.gradle file, updated user-messaging-platform to 3.0.0.
6. In the root build.gradle file, updated firebase-bom to 33.4.0.
7. In the root build.gradle file, updated billing to 7.1.1.
