Cant convert NHL 17 Demo into Full Game!? Plz Help thxs!

I play on an XBOX One btw.. But anyways I have everything that is NHL related uninstalled I even uninstalled NHL 16 for safe measures. But is the full actual game even available in the vault? Because I have heard everywhere that it is and when you go to the vault and click on FIFA 17 under the the title it says "Your Season Starts Now-Get unlimited play in the Vault" but when you click on NHL 17 and go to the install page on the app it says under the title "Play the Full Game for a Limited Time" so im confused what that even means if the full game is out.. But anyways with everything uninstalled I click on NHL 17 in the vault and go to the install page and click the obvious "Install" button it doesnt say demo or anything and its the only NHL 17 game in the vault.. So once its finally Installed I click on the game and the settings and how you want to play the game thing comes up and then you choose between the two teams and its just the demo.. I tried playing the whole game and quiting out of the game and it just takes me back to the option of picking the two teams.. All its allowing me to do is play the demo and I have no clue what Im doing wrong because im not ddwnloading a demo im downloading the regular game out of the vault and I have done it 4 times so ive been very careful in what im choosing and reading over things I just dont get it and thats about as detailed as I can really be about the issue I just ddnt know what else to do or try.