you need to ring - 8 in the morning is a good time
but at a tangent - you may not have a wallbox but there may be a cable coming in that you can use - start outside with the external box and follow any cables that go inside - if you find a cable with a connector that will connect to the hub you are at least half way there - you need a connector to use the cable that came with the hub
so have a search and come back with photos of anything you find
____________________
Tony