Okay wow haha my bad i never realised this never happend to me before with nicknames lmao thx for the replies

So explain me further as i said ive attempted anything i know that could "fix" and it does not,
Yes i ran as admin ive also deleted config json etc whole folder etc reinstalled etc

Dss0 I did

New to this decided to try it it out but as it seems when at the pluto launcher and i try logging in with forum name and password it says my account does not exist and now i cant go any further, Ive runned it on Admin etc looked at the other solutions none of them seem to work deleted files to let launcher reinstall them didnt work either