Unfortunately Note does not allow Facebook sign-in to your dartfish.tv account as Apple does not permit this when an app offers no Facebook sharing features.
If you created your dartfish.tv account using your Facebook sign in you will need to add a password to your account. Here's how to do it:
  1. Sign-in to dartfish.tv using Facebook as usual
  2. Click on your name at the top of the page
  3. Select Home
  4. Click Account Settings
  5. On this page, enter a password. This does not need to be the same as that used for your Facebook account
  6. Optionally, you can also set a different user name and email address, otherwise the email address obtained from your Facebook account will continue to be used.
Now, you can sign-in to Dartfish Note.