I’m pretty sure every used is allowed one name change, without any reason required as to why. However, if you want to change your name after that, you do need a good reason. (not entirely sure what validates a legitimate reason)
So basically you get one free name change.
Yep, we’ll change it one time for anyone. All we ask is that you make a note on your profile page, saying who you used to be. Just for a little while, until jellies get used to your new name. After the first time, you have to have a very compelling reason to change it. Just PM me the name you’d like to use, and I’ll take care of it for you. :)