the ravendb change api is never activated

Try the following code:

        var subscription = Store.Changes();
        await subscription.EnsureConnectedNow();
        var observableWithTask = subscription
            .ForDocumentsInCollection<ReferenceDataProvider>();
        observableWithTask.Subscribe(change =>
        {
            Console.WriteLine("Data subscription changed");
            Reinitialize();
        });
        await observableWithTask.EnsureSubscribedNow();