Why can I no longer send gifts in Fortnite?

I often and quite often give gifts to my friends in Fortnite, but unfortunately this is not possible at the moment, does anyone know why? Actually it always went from one day to the next, but somehow it didn't work anymore. Every time I want to give something to a friend, it says that he already has it or does not accept one. If I log in to his acc, he doesn't have it and the gift function is active.

Epic doesn't answer me.

You got hooked or something?