@RealLlamaHunter@FortniteStatus I wrote about it with the Epic Games Support and he/she sent me the link to the post, and after that, when I lost in Fortnite and went back, I got the banner.
We are aware that our Chapter 4 Season 1 FNCS Drops have not been correctly granted to some players who have earned them.
We will provide an update when we have more info.