I don't enter the Epic Games when I update my GitHub username help,I don't enter the Epic Games when I update my Github username help

I created accounts in both Unreal Engine website and GitHub so then I could download the Unreal Engine 4. I should update my GitHub username so I could enter Epic Games organization on GitHub and access the files but when I update my username I still do not enter the organization. What can I do??

Please help,

Closed, because of duplication:

https://answers.unrealengine.com/questions/152712/i-dont-enter-the-epic-games-when-i-update-my-githu.html