To link your account see this page and follow every step https://help.ea.com/article/linking-your-gamertag-psn-id-or-ea-classic-screen-name also before you do this you need to unlink your account from the old one and for that
For this you will need to contact Origin/EA support they will gladly help you whit this problem https://help.ea.com/en/origin go here press contact as give information press I still need help at the bottom of the page and then press start live chat and you will get a live chat whit an EA agent that will be glad to help you
if this helps pleas give XP to my account thanks
mark this as solution if it solves your question so others will know the answer when they come here
