A. 1. Check your internet connection: Ensure you have a stable internet connection. Try switching between Wi-Fi and cellular data to see if that resolves the issue. 2. Reset your password: If you suspect your login credentials might be incorrect, use the 'Forgot Password' feature to reset your password and try logging in again.

B. 3. Reinstall the app: Delete the app from your device and reinstall it from the App Store. This can resolve issues related to corrupted app data.