The good news? You haven't forgotten it. You just don't have one!
Yulio uses a password-less login system. Instead of passwords, we use the security of your email account to authenticate you.
Go back to the login page (https://www.yulio.com/accounts/login/), enter your email address, and we'll send you an email with your login key. Once authenticated, it's not necessary to log out of your account.
Check out our YouTube channel for more info & tutorials: https://www.youtube.com/channel/UCsZs0SQp_fiQEe2pfvfJkBg/featured