PS4 and Switch Fortnite accounts lock each other out, players

Using a Fortnite account that has been used on the PlayStation 4 will keep you from using that account on the Switch, and an account that has been used on the Switch can’t be played on the PlayStation 4.

Fortnite Parental Controls Guide

Fortnite cross-play: Sony surrendered, and PlayStation fans won

Best Fortnite settings for console: PS4, PS5, Xbox One & Switch

All About Balance: How to Enable Parental Controls on PlayStation

Fortnite Epic Games Account Merge: How to Link and Merge

Why Fortnite Accounts on PlayStation 4 Won't Work on Nintendo Switch

Party Hub FAQ

ATTENTION STEAM USERS, you are forced to create a epic games

Fortnite players can finally merge accounts, but it's complicated