Setting up new Apple TV as HomeKit hub

I run into the same hassle as some of the others: new 4th gen Apple TV, 3 HomeKit devices, one iPhone, one iPad. And I followed strictly the guide given by Apple (Automate and remotely access your HomeKit accessories - Apple Support). But neither does the HomeKit entry appear on Apple TV nor on iPad.

I resetted the iPad to factory default, redone the installation. Did not work.

I logged off and in my iTunes-account multiple times. Did not work.

I backed up the iPhone and the iPad, logged both off from iTunes, resetted the Apple TV, logged into iTunes only on Apple TV. Did not work.

I logged into iTunes again on iPhone and iPad. Did not work.

I've done that cycle two times, with different waiting times in between. Did not work.

What the heck is going on?

Wait a minute. Let me try to attach one of the HomeKit accessories to my iPhone only for testing. Before I kick out all this expensive garbage into the bin.

Plug-in-connector (Parce-Plus) was connected to iPhone. Plug could be switched on and off from iPhone.

Great!

Now the HomeKit-hub again.

What's that? It has appeared silently in the Apple TV. Suddenly it was there. Right after the moment I have connected the first accessory with Home-network.

APPPLE! WHY CAN YOU NOT TELL THAT THERE MUST BE AT LEAST ONE ACCESSORY CONNECTED TO ENABLE A HUB???

OMG, I do not know whether I should be excited about the final success or really angry that I have spend hours of my life-time for a product which is provided with insufficient absolutely mandatory information.

I'm stuck too. I have reset my iOS devices and AppleTV4. It worked when I first got it, but then HomeKit dropped off.

I'Ve got 2 factor enabled, I'm logged into iCloud, I've tried resetting the privacy / location settings. Anyone?

Set up your home hub

You can set up your iPad or Apple TV (4th generation) as a home hub to automate and remotely control your HomeKit accessories from your iOS device. The device you set up as a home hub must remain in your home, connected to your home Wi-Fi network, and powered on.

Set up Apple TV as a home hub

1. On your iOS device or Mac, set up two-factor authentication for your Apple ID. Then go to iCloud and make sure that you have iCloud Keychain turned on.
2. On your Apple TV, go to Settings > Accounts and make sure that you're signed in to iCloud with the same Apple ID as your iOS device.
3. After you sign in to iCloud, your Apple TV automatically sets itself up as a home hub. To check the status of your home hub, go to Settings > Accounts > iCloud and look under HomeKit to see if your home hub is connected. Learn what to do if you don’t see HomeKit.

Want to check the status of your home hub in the Home app on your iOS device? Open the Home app and tap in the upper-left corner. Then look under Home Hubs to see if your home hub is connected.

Get help with your home hub

If you have issues creating automations or controlling your HomeKit accessories when you're not home, follow these steps:
1. Make sure that your Apple TV or iPad is:

• Connected to the Internet and on the same Wi-Fi network as your other iOS devices during set up.
• Updated with the latest version of tvOS or iOS
• Signed in to iCloud with the same Apple ID with two-factor authentication enabled.

2. Make sure that you can control your accessories in the Home app on your iOS device. Open the Home app and turn on a light or change the temperature.
3. Make sure that your device is set up as a home hub:

• On your Apple TV, go to Settings > Accounts > iCloud and make sure that your Apple TV shows HomeKit as Connected. If you don’t see HomeKit, then your Apple TV isn't connected as a home hub.
• On your iPad, go to Settings > Home and make sure that Use this iPad as a Home Hub is turned on.

4. Restart your Apple TV, iPad, and iPhone.
5. Wait a few minutes. If you still need help, sign out of iCloud on your Apple TV, then sign back in. Go to Settings > Accounts > iCloud.
If you have an Apple TV (3rd generation)*, you can control your HomeKit accessories in the Home app while you’re away from your home. To change user permissions, create automations, or stream HomeKit-enabled cameras remotely, you need an Apple TV (4th generation). If you add an Apple TV (4th generation) to a home that has an Apple TV (3rd generation) set up, the Apple TV (3rd generation) will stop being used for HomeKit remote access.
*Apple TV (3rd generation) doesn't support remote access to HomeKit-enabled cameras.

I suspect you got the 3rd gen Apple TV. I'm having the same issues as you. I made sure to follow every step and still no successful connection between Apple TV and my Hue Bridge (2nd Gen). It only works while on Wi-Fi, but not while away