How do i find out which accounts are linked to my PS4 account

I was trying to link my epic games account to my ps4 so i can play cross platform but i wont let me because it says its linked to another account and i dont remember doing so

Hi there,

This website is intended for UE4 developers to get technical assistance. For Fortnite issues, please visit: http://fortnitehelp.epicgames.com/

There you will find various troubleshooting articles and an Email Us button you can use to get in touch with the Epic support staff who can assist you further.

Any general questions regarding Fortnite should be directed to the Fortnite forums, located here:

Thank you