You can change your in-game name at any time:

✏️ Tap your avatar icon in the top-left corner of the screen while in the City or Expedition.

✏️ In the window that opens, tap the pencil icon or the area with your current name and avatar.

✏️ In edit mode, tap the pencil icon again or the area with your current name.

✏️ Enter a new name. The maximum name length is 15 characters. Do not leave this field empty to continue playing.

✏️ Tap the Save button to apply the changes.