How To Change Your Activision Name In Cold War For PS5, Xbox Series X, PS4, Xbox One And PC

So I just got warzone, and I need to create an Activision account, as this is the first time it's required. I try to enter in my information, but it says invalid

How do I find my Activision ID? — CoD Mobile Help Center

How to make your Activision account data publicly available

Modern Warfare 2 'Change Activision ID' Error Screen: How to Fix

How to Link Your Activision Account to Steam !

How to add friends by Activision ID in Call of Duty: Vanguard

How to Link Activision Account Call of Duty Modern Warfare 3 (MW3)｜Game8

Modern Warfare 2 “Activision account could not be linked” error: How to fix, possible reasons, and more

How to Create Warzone mobile account/ How to Login Warzone mobile/ Activision Account - Call of Duty - Call of Duty®: Warzone™ Mobile - Call of Duty Warzone Mobile BR - TapTap

How do I change my Activision ID?