Urgent React Native Bug Fixes

I have an Expo-based React Native app that needs a quick round of fixes affecting both Android and iOS. The most pressing problems are:

• Login screen fails to redirect after successful authentication.
• Intermittent crash on Android when users move between screens.
• UI does not refresh in real-time after an API call, pointing to a state update issue (Context API).
• Small layout shift on the profile screen.

The codebase runs on the latest public Expo SDK and uses React Navigation, Axios for API calls, and the Context API for global state. Everything is pushed to a private Git repository and can be shared as soon as we start.

What I need from you
1. Diagnose each bug quickly, explain the root cause, and push clean, well-commented fixes.
2. Verify that navigation, state updates, and screen layouts behave correctly on both platforms.
3. Return a short report summarising changes, any packages upgraded, and how I can reproduce the fixes on my end.

Time frame
I’m aiming to merge and publish a patched build within 24–48 hours, so clear communication and regular check-ins on progress are essential.

If you have solid Expo experience, a knack for fast debugging, and can turn this around promptly, let’s get started right away.