Check your inbox for an email with "Here's Your Cvent Login Information" in the subject line. Your account number is listed next to Account.

If you can't find the email, you can access your account number by resetting your password. To do so, go to app.cvent.com. Below the Log In button, click Forgot your login information?. Enter your email address and check the "I'm not a robot" box, then click Submit. An email will be sent to the address you entered.

Your account number will be listed next to Account. Keep in mind that you have 48 hours to click the "Set your password and log in" link in the email and set a new password before you have to start over.