A. 1. Check if the app has a specific gesture or button for zooming and scrolling, as some apps use unique controls. 2. Restart the app to see if this resolves the issue, as temporary glitches can affect map functionality. 3. Ensure your device's touch screen is functioning properly by testing it with other apps. If the issue persists across apps, it might be a device problem. 4. Try using the app in landscape mode if available, as this can sometimes improve map interaction.