Step 1 — Click Edit Character
On your Characters page, click the more icon and click Edit Character.
Step 2 — Update name or ID
In the pop-up, update the Character name or ID, and click Apply.
Step 3 — Changes are saved
After clicking Apply, a notification will appear to confirm that your changes were successfully made.
Tip: You can alternatively update the Character ID simply by dragging the Character row up and down.