A. Ensure your device's software is up to date. Go to 'Settings' > 'System' > 'System Update' and check for updates. An outdated OS can cause compatibility issues with apps.

B. Uninstall and reinstall the app. This can resolve issues caused by corrupted files. Go to 'Settings' > 'Apps' > 'Amerigo' > 'Uninstall', then reinstall it from the Google Play Store.