Retrieving an old account from Khan Academy

Hello, I had an old account from Khan Academy, but recently I had to make another account for a class for Khan Academy, but the previous one I had before will not let me access. I know my username but the password is not coming to me and that account was linked to my school Clever, but my school doesn't have work with Khan Academy anymore. Khan Academy is not in my clever account and that account was connected to my old khan Academy account.