How to change username in GAS app?

here is God's app and if you tap on profile in top right here you can go to edit profile and then here you can change your username so for example do this and then just tap save in the top right so that's yeah what you can do I think it should be easy I don't know if there are any limitations how many times you can change your username or like if you can do it only once or so I think that um like you can only change your school and real name and grade only once uh and yeah then you you are not able to do it anymore you need to reach out then to there to support um hope that is helpful