No input field for Apple ID Verification Code
According to this Apple Support page, the issue is two-factor authentication with older devices/iOS.


  What if I use two-factor authentication on a device running older software?
  
  If you use two-factor authentication with devices running older OS versions, you might be asked to add your six-digit verification code to the end of your password when signing in. 
  
  Get your verification code from a trusted device running iOS 9 and later or OS X El Capitan and later, or have it sent to your trusted phone number. Then type your password followed by the six-digit verification code directly into the password field without any spaces between the password and the verification code.