Thank you, will-o-wisp for stepping up and helping out! Here is the part of the FAQ that applies:
Name Change In order to change your username here on the forums, you’ll need to reach out to our Support team. When you submit your ticket, please include your current forum name and at least three options you’d like to have it changed to.
RoronoaZoro23
Posts: 14 ★
Comments
https://forums.playcontestofchampions.com/en/discussion/119507/forum-faq#latest
Name Change
In order to change your username here on the forums, you’ll need to reach out to our Support team. When you submit your ticket, please include your current forum name and at least three options you’d like to have it changed to.