How do I unlock my facebook account?

[Darren]

I cannot find a usable answer via the Facebook Help Center. Hoping someone knows what I can do...

When I log in, I receive the message "Your account is temporarily locked. We don't recognize the device you're using. Please answer a few security questions to keep your account safe." I click Continue and enter the captcha text. Then, Facebook asks me to confirm my identity by providing my birthdate. BUT when I enter my birthdate correctly, a message claims this is not the correct information on file. Facebook directs me to "try logging into Facebook from a device you've logged in with before." I have no clue what other device this would be, other than my computer.

The Facebook help center simply directs me to take the steps above. Anyone have any ideas? Thanks!