1. Check the network connection: To confirm whether the phone is connected to the network, you can try restarting the phone or connecting to other available networks.

2. Clear the cache: open the phone settings, enter the Application management, find the FAW-Volkswagen app, select clear the cache and reopen the app.

3. Uninstall and reinstall: If the above methods can't solve the problem, you can try to uninstall FAW-Volkswagen App and download and install it again.

4. Update the App version: Check whether there is an updated version of FAW-Volkswagen App. If yes, it is recommended to update to the latest version.

5. Contact customer service: If the above methods fail to solve the problem, you can contact FAW-Volkswagen customer service for help, and the customer service may provide you with more specific solutions according to the situation.