The TWS3 pre-order runs fine, but this is all I get from the Microsoft Store... Try and try, renaiming hopeful. And yes, I have cleared the cache. The ONE reason I bought it, of course!
Either highlight TSW3's icon on the Dashboard, or from the Dashboard go to My games & apps > Full library > All owned Games > and highlight TSW3's icon. Press the 'Menu' button > Manage game and add-ons > Press 'A' on TSW3's icon > Select the DLCs that you want to install > Save changes
Did you buy this route alone? if so you can only play it from the 6th. The TSW3 launcher is seperate from each route so it can be run with routes that are not yet availible (Like Bakerloo Line). Also follow instructions in comment above mine to download your route