I recently upgraded to xbox gamepass ulitmate and now my EA desktop says membership expired...

Concerning this, it will be best if you can contact the support through Contact us | Xbox Support

They should be able to help!

If you had a previous account linking and it doesnt say "EA play with game pass" under settings-> my account -> my membership in EA Desktop app then I suggest

- Clicking Manage from the settings in EA Desktop app to go to the EA customer portal website and under Connections disconnect the xbox account

- Then log out of EA Desktop and exit both apps

- Then install a EA game from xbox app

It will log you into EA Desktop and link accounts giving "EA play with game pass" membership and start downloading from EA Desktop app

Note it says you can only ever link one xbox account to your EA account

no

Ulitmate is gamepass and gold in one membership if you turned off auto renew you would keep youtr ulitmate membership for the 3 years in your case then it would just run out

you cant move it too a other account but you can share with any account that is signed into the same console or on that accounts home xbox.

Hey I Was a Walker

When you sign up for ulitmateon the 1 euro deal that then merges any existing gamepass membership and gold memberships togethor. So for example lets say you had 5 months gold 2 months gamepass sign up for the 1 euro deal for a month. that would give you
8 months ulitmate.

Ulitmate is Gamepass for xbox and gamepassfor pc and gold in ONE membership

If you just turned of auto renew then you still have the 8 months and wouldnt be charged anymore in 8 months time it would just run out. If you choose too cancel then that should then give you the option to get a refund. If that wasnt the case then you can
request a refund online here https://support.xbox.com/billing/xbox-subscriptions/digital-goods-subscriptions-refund

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.