I think it may have something to do with opening ports, port forwarding, ip address, DMZ on access point and router.
My home setup is wifi access point(doesn't handle dhcp) connected to dsl modem/router and the modem/router handles the DHCP. I am not using static ips, I am using dynamic. Both ap and router have a DMZ field to enter an ip address.
My dsl/modem router ip address is 192.168.1.1
Wifi access point ip address is 192.168.1.2
AppleTV ip address(dynamic, not static) is 192.168.1.113
Wifi Ap has an option for application rules, port forwarding with port trigger,port firewall,traffic type
Router has option for single port forwarding,port range forwarding, port range triggering,
If people can list here multiple different ways for me to get it to work that would be fantastic, even if the ways may not be the most secure.