In this short tutorial, we’ll show you how to change your Login name for Call of Duty: Black Ops Cold War.
First of all make sure that your game is not running in the background and then click on the first link in the description to get the following page.
Here make sure to Login with your Activision account on the top right to get to the following page.
You should be able to access you Basic Infor preferences.
As you can see in the image, you can select to add your Activision ID. In case you haven’t change your user name then you have 2 changes remaining.
As a lot of users got their accounts hacked and their user names got changed automatically. In that case you should contact Activision support directly. Make sure to add you Activision ID and the email associated with the account and the issue you are having. Then the account name should be fixed.
I hope this help you out.