Ultimate Edition add ons not working

So the reason this might be happening is that I am playing this game through Game Pass. Now I did specifically download the Ultimate Edition, but like I said the add ons are not working. How do I fix this? Or is this a limitation of Game Pass Ultimate?

you only get the base game free through game pass, if you want the other editions, you need to pay for them, at a discounted price of course. The expansions aren’t available through game pass

Not sure where it said you’d get ultimate on game pass. Ultimate costs money, standard is “free”.

If you want the ultimate add ons with game pass you need to buy the ultimate addons pack
There is no fh4 ultimate edition for game pass