I am afraid of so much ignorance
First: HWID - Hardware Identification
Fortnite: HWID and Account Unban
Open the registry editor. -> Windows + R then type in 'regedit' and press enter.
Navigate to this registry key:
Code:
HKEY_CURRENT_USER\Software\Epic Games\Unreal Engine\Identifiers
Delete the folder
Restart the ENTIRE Epic Games Client, not just the game. -> This should regenerate the registry keys with new values, thus unbanning your account.
Thanks DefCon42 on a other forum for this summary