nintendo icon and name not changing?

Question

time traveled in crossing

reset time to normal

changed name on account

nickname stayed stayed after thirty zillion attempts to change it

in game nickname failed

calling nintendo will take hours and i will explode by then

and every other option to make a new nickname did not work

even turning it on and off did not work

how do i change my nickname and keep time traveling

how to remove a super fricken permanent nintendo nickname

Update:

and yes i deleted my user but it reset nickname even after is was linked again

Update 2:

nevermind that did not work dam