This are the instructions for changing the user and home folder:
I didn't follow this warning:
The administrator account needs to be a different account than the one you're renaming. If necessary, create another administrator account, then remove it when you're done.
Now when I try to unlock admin right on the preferences pane it asks for:
And nothing seems to work.
I know the password for sure since I can login.
I have done
ls /Users and can see what should be my old user and that doesn't work, neither does what I set, how can I solve this?