Sign-Up and Login Troubleshooting

certN uses a password-less authentication system for increased security. In this system, instead of storing a username/email-address and a password for your authentication, only your email address will be stored, and each time you want to log in, a login link and a code will be sent to you, using which you can log in to the system.

I Don’t Receive the Login Email

If you don’t receive the login emails from,

  1. Refresh your email client to check for new emails.
  2. Wait a few minutes and check again.
  3. Check your spam folder, and any other folder (such as “promotional”) that may contain new emails.

If the steps above don’t work for you, it means that your mail server thinks that the email is spam, and therefore, is deleting or rejecting it. Solving this issue depends on your mail server: You may have access to whitelist, or you may have to ask your sysadmin to do it for you.

If you can’t fix the issue in your mail server, the only solution is to use an alternative email address. In contrast to some [poorly set up] corporate email systems, public email services such as those from Gmail and Yahoo usually work without any issues.

I Can’t Sign-Up or Login Using the Link/Code

There can be two reasons for that:

  1. The link and code are valid for 15 minutes. If it’s been more than 15 minutes since they’ve been issued, you need to go back to and try again, to receive a new code.
  2. You’re using a wrong code. The login code is what you receive from for a one-time login. Make sure you’re not mistaking it for the voucher code you’ve received from your training provider to activate exams.