A. Ensure that your internet connection is stable. Try switching between Wi-Fi and mobile data to see if the issue persists. If it does, clear the app cache by going to 'Settings' > 'Apps' > 'Startpage' > 'Storage' > 'Clear Cache'.
B. If the problem continues, consider reinstalling the app. Uninstall Startpage, restart your device, and then reinstall it from the Google Play Store.