Why am I requested to enter a digital pin code when logging in?

If you see this popup during the login process:

Please contact a representative via Live Chat, phone, or email if you don't recall your PIN code and it needs to be reset.

If you are receiving this message when trying to login to a demo account, please enter any four numbers and click OK. If it does not let you login still, please contact a representative via Live chat, phone, or email so we can assist you.