A. 1. Check your internet connection to ensure it is stable. 2. Clear the app cache by going to Settings > Apps > Pick 'n Save > Storage > Clear Cache. 3. If the issue persists, try uninstalling and reinstalling the app to reset any corrupted data. 4. Ensure that your login credentials are correct and that your account is active.
B. 1. If you have two-factor authentication enabled, ensure you are entering the correct verification code. 2. Try resetting your password by selecting the 'Forgot Password' option on the login screen.