If not, create a new one with a random email. If you have a parent account with your account linked to it, reset your passcode. Luckily, you can override this by creating a new class for yourself.
What people don't know is that when you join someone's class, they can see your passcode and even change it. If you've fallen for the 'free membership when you join my class', here's how I got out of it.
This is a lil' off-topic but people need to know this.
