I light of the complete lack of response on the support forum, I’m posting here.
Have finally got HW:DE code and installed fine, but the game gets stuck on the “Press any button to continue” screen. The background animation will change if you press a button, as if it registered the press, but the UI itself won’t. Works exactly the same with mouse, keyboard and xbox controller. Have reinstalled the game, rebooted PC etc. multiple times. Running Surface Book I7 with NVidia graphics and 8gb ram. Shame it doesn’t even seem to run correctly on Microsoft’s own hardware.