[Confusion on my display and login names]

Thank you all so much!

[Confusion on my display and login names]

I read that I would choose a login name and then select a display name.  I was not given the option when I signed up to select a display name and did not want my login name used for that.  So I edited my profile to change the display name.  Now my avatar has my display name with my login name under it in parenthesis.  How can I just have my display name I chose shown over my avatar?

Thank you for any help