Very hard to see too much detail from the photos. The white wall box looks like one from the former cable TV companies which VM acquired.
Does the black cable from outside go into the back of that white wall box? The white cable coming from the bottom of that white box may be relevant. It looks the same as my own NTL wall box.
On the bottom underside edge of that box, is there a connector sticking out of the bottom of the box which the white cable is connected to?
If so, unscrew the white cable and try connecting the cables from the Quick Start kit onto that connector (I believe the new cables are push fit on whereas old connectors have to be screwed on/off).
If no connector, you might have to try that splitter thing under the white box but can't see that too clearly in the pic.
If I'm on the wrong track, someone else will give other suggestions.
Edit: Pic below of my own NTL box. My VM hub is connected to the 'TV' socket sticking out of the bottom edge of the box.