We want you to feel inclusive, therefore it is up to you what your username (or nickname) will be visible to other members of the community.

It will be used for your recognition.  

Can I change my username? 

Hi @teuku.faruq14 ,

Currently it is not possible from your profile.

Only the first time members are asked to provide a username, but cannot be changed afterwards.

I really apology for this inconvenience.  

I have been investigating it with the teams to make it available soon on the platform.

See also other post reporting the same issue: