so i loaded up xbox app pc and it said i got a free ultimate gamepass so i got it and i...

You may need to reboot or log in and out to see the changes

No, They are not. I had GamePass PC earlier and everything used to work properly but then one day I got notification that there is an offer on GamePass Ultimate so I upgraded but since the day GamePass PC subscription ended and GamePass Ultimate subscription started, I can only launch games that are on EA Play and that too from EA Desktop App only.

Now, because the GamePass Ultimate was a 3 month subscription, so I can't even go back to GamePass PC until it's over.

Any game that launches from Xbox app for Windows fails to launch and tried repairing and resetting the Xbox and Microsoft Apps, sign-out and then again sign-in on both the apps but still same thing.

For Example, Forza Horizon 4 used to work earlier but now it does not.

Are there different versions of Ultimate Gamepass? There is only one right? It's not like there is Ultimate Gamepass and then Ultimate Gamepass PC right? Its $16 a month for the Ultimate I have and pay for but anyhow it doesn't want to register on my Xbox
Beta app. It will take me to the store to purchase it for $1 (discounted then $14.99 a month afterwards) but if I go to the Xbox app, it will let me remotely download Gamepass games to my xbox. I literally just got into the CPU scene so i'm trying to troubleshoot
this

Weekends are not business days, no one considers Saturdays and Sundays business days, give it a few more days for the registration keys as I am waiting on one as well. It takes time especially when they got a lot more interest in the Beta than they anticipated.

You will have to wait until more keys are available.