Fortnite Developer error message: Max of 40 active Islands reached. Delete some to make space.

If you receive this error, it means that you reached the limit of Islands you can publish. You can request additional Islands by navigating to the Creative Support form (Opens in a new tab).  

If you have fewer than 40 published islands and you think you may be seeing this message in error, please submit a bug report: How to submit a Fortnite bug report in-game