Apple TV 3rd gen activation and screen mirroring issues

I have bought an apple TV 3rd. generation, but it has some problems. 1. I can not see my apple TV on my phone when I open screen mirroring, 2. In apple TV main menu activation is failed. 3. free platforms in apple TV does not play any videos

I use same WI-FI network

I have updated phone and device

I have registered my apple ID in apple TV

[Re-Titled by Moderator]