I e-mailed Skoda and they won't even acknowledge that there is an issue. I sent them a link to this forum and they replied "we do not comment on forums".
They keep passing me back to the service centre, which seems a little unfair given that the software is the responsibility of Skoda, not the service centre.
For what it's worth - I have tried adding destinations on the web Dashboard (skoda connect), the App (Android) and the car. Nothing seems to work - the App lets you save charging sites and the web version lets you save some addresses (but they do not actually save - it says they are saved and then they vanish). It suggests there is a fundamental issue with data being saved but impossible to tell whether data is meant to be saving in the cloud or always in the car itself.