"The Creator Code <code> is unavailable" despite code not being in use

Summary

I’ve tried to update my creator code but running into this error with several codes I’ve tried. Each code meets all the given requirements, the creator page (fortnite.com/@[code]) doesn’t exist and none of the codes work as a shop code so I believe the codes should be available. What gives?

Please select what you are reporting on:

Creative

What Type of Bug are you experiencing?

Creator Portal

Steps to Reproduce

Update your island creator code at https://www.epicgames.com/account/creator-programs?productName=fortnite

Expected Result

Code is available → code is updated

Observed Result

Despite the code not being in use it’s marked as “unavailable” and thus cannot be used

Platform(s)

Any