If you used BioSig last year it might be asking you to enter that code. If you are anything like me, you may not remember what it was in which case you have to do a password reset. Just enter a wrong password in three times and that will prompt the system to send you a link to reset. Follow the prompts to create a new password.
Here is a link to the NMLS BioSig Help page: BioSig-ID Help (nationwidelicensingsystem.org)
Good luck in getting CE knocked out!