https://support.mmo.com/s...les/48000717793-how-can-i-change-my-username-
Asked 100 times
Use search.
https://www.mmo.com/search/17204772/?q=change+username&o=relevance
Leads to
https://www.mo.com/seo/can-i-change-my-username.1040791/
Conclusion, you probably need a jr vip status and then...