I can't get into the plutonium launcher what should I do?

[itzBlackz__]

I can't log into plutonio launcher, when I try to log in it says my account was not found

[Dss0]

itzBlackz__ usernames are case sensitive so make sure you put in "itzBlackz___" instead of "itzblackz___". If it still doesn't work try removing the underscores from your name.