I installed MG iSmart as I have ordered an MG EV, but when I tried to launch the app, it complained that it doesn't allow VPN.
I looked in the list of WebGuard supported apps and MG iSmart wasn't listed. So I wasn't able to just exclude it from WebGuard.
Turning off WebGuard for Supported Apps resolved the issue. 
Why did WebGuard push this app through the VPN without allowing me to exclude it in the settings?
I realise that the app is sending data to China but I Will need to use this app regularly when I get the car.