Are you changing the name through the website name changer?
If you try adding the name as a friend ingame, does it show it's in-use?
Life is like a camera: Just
focus
on what's important,
capture
the good times,
develop
from the negatives, and if things don't work out,
take another shot
!
Try changing it in the website account settings instead.
If it's also unavailable there, the name would have been removed from the game or in use by a banned player - more info at
https://support.runescape.com/hc/en-gb/articles/115001761889-Unavailable-character-names
Life is like a camera: Just
focus
on what's important,
capture
the good times,
develop
from the negatives, and if things don't work out,
take another shot
!
Click
Account
in the upper right, then
Change character name
Life is like a camera: Just
focus
on what's important,
capture
the good times,
develop
from the negatives, and if things don't work out,
take another shot
!