I couldn’t find Promo Codes sections since the iTunes documentation is outdated. To generate Promo Codes with the new iTunes Connect (as of Nov 2015):

  • Click on ‘My Apps’.
  • Click on the app you like to generate codes for.
  • Click on ‘Features’ tab
  • Click on ‘Promo Code’ section in the left vertical menu.

promocodes

Our users also experience problems redeeming app promo codes via iTunes on the computer. The error returned is ‘There was a problem downloading [app name] … ipa could not be found on the server’.

However redeeming directly via the “App Store” app on the device works.

  • Tap the ‘Featured’ tab
  • Scroll to the bottom and tap ‘Redeem’
  • Enter code