There seems to be a bug in the Apple TV app that causes it to not connect to a server behind reverse proxy if the server allows for TLS1.0 or 1.1. It works perfectly fine for everything else but tvOS devices. I guess the Emby app tries with the lowest version possible and the OS is denying it to use this, letting it silently fail to find the server.  I blocked TLS 1.0 and 1.1 in Traefik, which I'm using as my reverse proxy and I'm now able to connect with https and/or port 443. To fix