Please follow these steps to setup your Apple TV 4:
1. On your Apple TV Menu choose the "Settings" option
2. Select "Network"
3. Click on the Wi-Fi button at the top
4. Choose your Network
5. This will take you to your Wi-Fi configuration where you will see configure DNS option at the bottom of the page
6. Confirm that you want to set DNS manually
7. Select configure DNS option and select Manual then enter the following DNS Number: 212.32.240.145
8. On the Network screen please verify that the DNS numbers you have just entered are present.
9. Go to settings and select Sleep now
10. Go ahead and Unplug the Apple TV power cord
11. Wait ten seconds
12. Plug the cable back in on your Apple TV
Please follow these steps to setup your Apple TV 3 or earlier:
1. Turn on the Apple TV and go to the Settings then click on General.
2. Select Network
3. Then go ahead and select Wi-Fi for wireless network or Ethernet if you are using a wired connection.
4. If you have not already setup a Wi-Fi connection you will have to choose your network and input your password for the Wi-Fi again if needed.
5. Select Configure DNS
6. Select Manual
7. Enter following number and click Done: 212.32.240.145
8. On the Network screen please verify that the DNS numbers you have just entered are present.
9. To make sure the US Apps are present on your Apple TV please go to the Settings > General > iTunes Store > Location
10. Select United States
11. Go to settings and select Sleep now
12. Go ahead and Unplug the Apple TV power cord
13. Wait ten seconds
14. Plug the cable back in on your Apple TV
Important
First step of troubleshooting should always be to restart device(s) and router. Then check your setup status in your SmartDNS dashboard.