My friend in Fortnite can't hear me, why is that?

I'm trying to play fortnite with a friend, but he can't hear me, but I can hear him. I play on ps4 and he on computer. My headset is plugged in and works fine

Muted micro? Or muted ingame

Better play Minecraft on Fortnite.

You have to turn off push to talk

It was over, but we still got it sorted

Neither, his attitudes were just strangely changed

Was such a comment really necessary now? Instead of just ignoring my question

Well the comment was necessary.

No, he was not. Do something else instead of telling others what to do and what not to do. I enjoy fortnite and it is really unnecessary to answer that I should just play something else when I ask questions about the game.