Problem with Installation

Hello,
for Christmas I got the game forza motorsport 7, which is designed for xbox but thanks to XBOX PLAY ANYWHERE I can play it on Windows 10.
In the package was a card with the code I entered into the Microsoft store and the game appeared in my library.
Unfortunately, I did not expect the option that I have not played the game until now, because when I always try download the game… I still have same error 0x80073D12.
And it writes to me that it can’t download DLC without the game installed, and the game retroactively writes that it can’t install without DLC, I’m confused myself.
I tried to solve it differently, to watch the Internet for different guides, but without success until I came to the opinion if I have a problem with the license.
Therefore, I ask someone for help if he could not advise me what and how.
Oh, and a bonus.
In December I reinstalled Windows and on both of them it just downloaded the system log to the event log, it easily spam my system disk size 100GB and more …

you need to post this on the forza motorsport 7 forums, not for Forza Horizon.