Hi there! Sorry to hear you're having trouble logging into the Fly Delta app. Let me help you get this sorted out.

To start, can you tell me if you see any specific error message when you try logging in? Also, have you recently updated the app or changed any account details like your password or email?

While I wait for your response, here are some common steps to resolve login issues on the Fly Delta app on Android devices:

1. Check Internet Connection
Make sure your device is connected to a stable Wi-Fi or cellular network.

2. Verify Date and Time Settings
Ensure that your phone's date and time settings are correct and set to automatic. Incorrect settings can cause authentication errors.

3. Clear App Cache and Data
Go to your device's Settings > Apps > Fly Delta > Storage, then clear the cache and data. This refreshes the app’s temporary files that might cause issues.

4. Uninstall and Reinstall the App
Completely delete the Fly Delta app from your device and then reinstall it fresh from the Google Play Store. This often fixes issues related to corrupted files or outdated app versions.

5. Reset Password or Recover Account
If you suspect your password might be incorrect, try resetting it via the Fly Delta app or website.

If you've tried these already or if the problem persists, please let me know any additional details, such as error messages or steps you've taken. That way, I can guide you further or escalate if needed.

Would you like help with any of these steps?