I am part of the Fortnite Developer Program, but my Creator Code can't be used in the Item Shop

Your Creator Code can only be used in the Item Shop if you are part of the Support-A-Creator program. If you are only part of the Fortnite Developer Program, your Creator Code will not work in the Item Shop.

To learn more about this and other differences between our programs, refer to the article What’s the difference between the Support-A-Creator and Fortnite Developer Programs?.