Apple TV
Why won't my Apple TV connect to the network
Why won't my Apple TV connect to the network
Well, how would we know? We are not mind readers.
Any errors?
The following article(s) may help you.
Troubleshooting Wi-Fi networks and connections
Wifi Diagnostic Software (for Mac users)
You may also find some help on this page, where I’ve collected some of the more unusual solutions to network issues.
Apple TV