A. 1. Check your internet connection: Ensure you have a stable internet connection. Try switching between Wi-Fi and mobile data. 2. Reset your password: If you suspect your password might be incorrect, use the 'Forgot Password' option on the login screen to reset it. 3. Clear app data: Go to 'Settings' > 'Apps' > 'G-STAR' > 'Storage' > 'Clear Data'. This will reset the app and may resolve login issues. 4. Update the app: Ensure you have the latest version of G-STAR installed from the Google Play Store.