Screen Mirroring not working from my iPhone but working from another one

I'm using a UE55NU7092 samsung tv and I've noticed I can't mirror my screen from my iphone 8 anymore, even though I can stream using another iphone (a 6s). My tv also doesn't show up on my macbook through airplay.

My tv and devices are connected to the same wifi network, and it used to work but suddenly they stopped working.

My iphone 8 is on ios 13.4 and the 6s is on 13.3.1. My mac is on macos 10.15.4, and I believe it worked before I updated to this version. The tv is on version 1292.

Also, this problem extends to youtube and spotify. I can't login to youtube by searching for connected devices and on spotify my tv doesn't show up in the Devices Available menu neither on my iphone nor on my macbook.

I tried unplugging and plugging back, restarting all devices, reconnecting to wifi and nothing worked.