You may not be able to log into your paper trading account if:

  • You requested a new paper trading account that isn’t ready. It normally takes 24 hours to be activated.
  • Your live account is closed. In that case, your paper trading account will also be closed.
  • You have an older account and have never activated a paper account (newer accounts include a paper account).

See also: What is the username of my paper account? and How can I reopen a closed paper trading account?