I want to change the nickname I set.

You can change your nickname for Lysn, but you cannot change the nickname used in previous messages sent by the artist.

When an ARTIST sends you an Welcome message after you subscribe, the message will have the nickname you set for the Lysn.

※ How to change a nickname: MORE > Select profile > Edit profile > Edit nickname

Also, you can set different nicknames by ARTIST through the 'Custom nickname setting' function.

[bubble inquiries > User inquiries > Can I set different nicknames by artist? (how to do Custom nickname setting)]