Hi Anna, 

Welcome to Box Community and glad to help! 

Looks like 2FA is not enabled to your Box account. And perhaps, are you referring to your other Box account? If yes, please open a case using your affected Box account so we could help with your log in issue.  

We'd love to further assist! 

SO sorry for the late response!
Yes, I was trying to login with my corporate Box account but cannot log in with the account and open the case because I need the verification code... How should I share the account?