Classmates can't login

I created an account on classmates.com yesterday, August 12, 2017. Today, the website won't allow me to sign in! It says invalid username, invalid user account, invalid user password. HOW DO I LOG INTO MY CLASSMATES.COM ACCOUNT WHEN IT WON'T ALLOW ME TO LOG IN?????
I even clicked on the "forgot" in an effort to see whether I was entering something wrong and it wouldn't even allow me to do that. Please, either help me create an account that is reliable for me to log into or help me at least get onto the site so I can permanently delete everything I created yesterday.

Thank you!