Answers:
1. Are your Apple TV's running the latest software version? Here's how to check for an update: Update Apple TV software
Yes. 13.4.8. I have not had an issue for the almost 18 months I've had this until just a few weeks ago. I suspect it's possible that the 13.4.8 update caused the issue. Is there a way to go back to the older version? I tried to reset (NOT reset and update), but it still applied the latest update after reset.
2. Since you mentioned that you were able to connect your Apple TV's using an Ethernet connection in the past, can you let us know if any changes were made to your devices or network before this began?
No changes made. My AppleTV updates from apple automatically, so it's possible this was when this happened. If I take out the ethernet wire from my AppleTV and then directly plug it onto my laptop, my laptop Internet works fine. This tells me the setup is okay outside of the AppleTV.
3. When you attempt to connect the Apple TV to the internet via an Ethernet connection, do you ever see a specific error message? If you do, please let us know what the error message says.
- Currently, it does not even recognize the ethernet. Even if I have it forget my wifi connection and restart, it will not recognize the Ethernet is plugged in. When it does connect, it correctly sees the network, gets an IP address, sees the right DNSs so it seems that it should be fine, but while it can connect to the router, it won't connect to the internet so Netflix, YouTube, App Store, anything that requires internet, won't work/connect. I am experiencing the exact same thing as in this unresolved thread: https://discussions.apple.com/thread/8111390?login=true