How to change username on twitter?

[Kc]

When i click changer username and type in an available name, i click save changes and when the message pops up to type in my password the username box turns yellow and switches back to my old username. Twitter help hasn't helped. Idk what to do and its really aggravating me. Any help is appreciated.

[Masum]

Try it after few hours or from another PC. It will be for sure.

[Sarah]

You can wait for some time, or can try from another system.