Yes, sharing from any other mapping app works. It’s only sharing from W3W that doesn’t. But the message about ‘No internet connection’ is coming from MercedesMe I believe.I must admit I don’t tend to share from the W3W app.
My normal route is to find the place I want to go to using the Google maps app - and then share and send to car from Google maps.
@Reteb if you try Sharing from Google maps or Apple maps - it should tell you if it’s a W3W app problem or iOS problem?