Project Title: Fix Firebase Phone Authentication (OTP) & Google Cloud Configuration for FlutterFlow App Project Description: I am developing a Job Portal app called "Maharojgar" using FlutterFlow. The app is nearly complete, but I am facing a persistent "Not Authorized" error with Firebase Phone Authentication. I need an expert to audit and fix the backend configuration. Key Tasks to be Done: Fix Authentication Error: Resolve the "This app is not authorized to use Firebase Authentication" error that appears during the OTP request. Google Cloud Audit: Verify and fix API Restrictions and Credentials in the Google Cloud Console. SHA Key Sync: Ensure SHA-1 and SHA-256 fingerprints are correctly configured and synced across Firebase, Google Cloud, and FlutterFlow. Package Name Verification: Double-check the consistency of the Package Name (com.krishnainfotech.maharojgar) in all consoles. Identity Toolkit & App Check: Ensure Identity Toolkit API is enabled and Firebase App Check (if needed) is correctly set up. Testing: Verify that the OTP is successfully sent and received on a real Android device (APK). Requirements: Proven experience with FlutterFlow and Firebase integration. Strong understanding of Google Cloud Console settings and billing. Ability to communicate in Marathi or Hindi is a big plus for better coordination. Must be able to complete this task quickly as the project is in the final stage.