I have never in my life seen a company that only lets you link 1 account in its lifetime. I have had my EA account for years. I had unlinked an Xbox account which I stopped using a decade ago. Now I want to link my current Xbox account and I can't because I unlinked an account which I don't ever using with anything EA it was that long ago. End result. I just avoid anything EA because I can't be bothered to make an account that I can link to my Xbox. Pro tip, make your company have as little barriers as possible. Every complication you create is another point for the user to not bother using your service. Most people are not patient enough to deal with rubbish, they will just move on. And in all fairness, EA isn't the king of anything anymore.