Hey @El_Mr_T,
Your progress and cosmetics would be tied to the EA account where they were initially unlocked.
Unfortunately, this means that if other people had access to your account and had progressed on a platform connected to it (in this case PS4), that progress would also be tied to your EA account.
I'm afraid we'll be unable to assist in these situations as we do not support account sharing and would not be able to transfer progress from one EA account to another, sorry.