Squadrons - Sign out of EA account.

You're SOL. Once an EA Account is linked to an Xbox Account, it remains linked forever. I've been calling Xbox and EA support for over ten years to unlink my Xbox Account completely from the EA Account it's connected to (it was auto-created with the Xbox Account's e-mail address and auto-connected in Xbox 360 days back when Origin and EA Accounts were separate and you couldn't use the Origin Account with the Xbox 360!) and link it to my primary Origin PC account, but Xbox can't (well, they can unlink it, but as soon as you start a new EA game on Xbox it auto-links the old account again) and EA won't help. Maybe a higher level support tech at EA would be able to help me, but the lower level guys will never connect me to one or their supervisor and just say it's not possible.

All you can do is get a new Xbox Account and link that to your existing EA account. But that likely also won't be an option.

I'm having an issue like that it says my ea account has expired, so I created a new one and it still says the same thing, I can only play the story mode what do I do, it's a PS4 that I'm on