This error message usually displays due to changes in some factors such as the server, country, or when the internet connection is slow or off.
If you keep seeing the error:
- Try to reinstall the app's profile, it should fix the issue;
- Tap the
icon at the bottom of the application, then select Settings. Finally tap on Re-install VPN Profile. Follow the on-screen instructions to install a new profile. - To start or stop the VPN connection please start it within the app.