A. 1. Check Credentials: Ensure that you are entering the correct username and password. If you have forgotten your password, use the 'Forgot Password' feature to reset it. 2. Clear App Cache: Go to Settings > Neurocycle and clear any cache or data if the option is available. 3. Update the App: Make sure you have the latest version of Neurocycle installed.

B. 4. Restart Your Device: Sometimes, a simple restart of your iPhone can resolve login issues.