Can you clarify what is wrong? Are you talking about the initials in the image being correct but the tooltip that pops up when you hover over it is wrong? When you click your profile it shows your name and email address correct?
It may just be a caching problem. I would recommend that you sign out and then sign back into VS. If that doesn't work then go to the Account Settings and change your name to something else. Save the changes and then go back and change the name back. Sign out and back into VS.
If that still doesn't work then the next step would be to wipe your local identity cache.