Hi Jarook,

Is it possible for you to provide us with the back end and FTP access to your site to check on this issue?
Or can you check the setting that you've set up for:
1. (settings>user>layout>User's Name Format): http://take.ms/Z7AHy
2. (profile type>choose profile type>custom field>username): http://take.ms/59ewP
3. (profile type>choose profile type>custom field>fullname): http://take.ms/9G2kk

Thank It is working now.. after I change the setting in the Profile Type.

You are most welcome Jarook Glad to hear your issue has resolved.

As a gentle reminder, kindly start a new thread if you have any other issue in the future so it will be easier for us to manage your inquiry. I will lock and mark this thread as resolved.

Have a nice day ahead