A. 1. Double-check your credentials: Ensure that your username and password are entered correctly, paying attention to case sensitivity. 2. Clear app cache and data: Go to Settings > Apps > EXCEED > Storage > Clear Cache and then Clear Data to reset the app. 3. Check for app updates: Make sure you are using the latest version of the app from the Google Play Store.

B. 4. Restart your device: A simple restart can sometimes resolve temporary issues.