I couldn’t find Promo Codes sections since the iTunes documentation is outdated.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.
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