iPhone 6s (Apple TV feature) Apple TV 3 - not working

Hello everyone!

I just upgraded to iOS12 and it's cool BUT I'm unable to use Apple TV feature and connect to my Apple TV 3rd gen. My remote works fine, my second remote (from my TV) works fine.

Apple TV feature in my iPhone 6s is useless. Can you/I fix it somehow? Please advice. This feature is not detecting anything.

So, before you start asking anything:

1. I did restart my iPhone 6s a few times

2. I did restart/reset my Apple TV 3

3. I tried to upgrade my Apple TV 3

4. I tried many configurations with my WiFi network

Please help. Anyone else experiencing this kind of issue?