Your comments have been noted and I will admit that my writing does need a lot of improvement.
I have updated the article adding my current experiences from the game, which are terrible to say the least, with the game refusing to download for both myself and the majority of users who left reviews on the Microsoft store.
After a 30 minute support call and several online chats with Microsoft technicians regarding this issue all i can say is that the Microsoft Storefront had fallen over at the first hurdle, with the first store exclusive and DX12 game being unavailable to download, nevermind play.
Microsoft are aware of the issue and say that they have a team working on the download issue, but it really shows a lack of preparation on Microsoft's part.