A. 1. Check Your Credentials: Ensure that you are entering the correct email and password. If you have forgotten your password, use the 'Forgot Password?' link to reset it. 2. Update the App: Make sure you are using the latest version of the app, as updates often fix login issues.

B. 3. Clear App Cache: Offload the app as described above to clear any corrupted data that might be causing login issues.