Expo Google OAuth Login Fix

My React Native app is built with Expo and the Google sign-in flow, wired through OAuth 2.0, has suddenly stopped working on both iOS and Android builds. The login sheet shows up, the user selects an account, but the callback never delivers a usable access token; instead the promise rejects and the app stalls on the sign-in screen. I need a developer who can: • inspect the current implementation (Expo SDK 49, expo-auth-session + expo-google-auth-session), • track down the root cause of the failed callback on each platform, • adjust any Google Cloud Console or [login to view URL] / gradle scheme settings that might be blocking the redirect, • deliver a working patch and a concise summary of the steps taken so I can replicate the fix on future builds. Please test on at least one real iOS device and one Android device to confirm the flow completes and user data is returned correctly. Once the fix is verified through TestFlight and an internal Android build, the task is complete.

Project ID: 40330685