HomeKit in iPadOS 17

IPad is no longer supported if you've migrated too the new HomeKit architecture. Like me. Which is unfortunate.

The iPad from which this screenshot was taken is running iPadOS 17.0.3 - this being the most recent production version of iPadOS.

Try a forced-restart of your iPad - as this will often clear an isolated software issue:

Force restart iPad (models with Face ID or with Touch ID in the top button)

If your iPad doesn’t have the Home button, do the following:

1. Press and quickly release the volume button nearest to the top button.
2. Press and quickly release the volume button farthest from the top button.
3. Press and hold the top button.
4. When the Apple logo appears, release the top button.

Force restart iPad (models with the Home button)

Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.

If the problem persists after performing the restart, it may be necessary to reset your iPad settings. While this reset will not cause any loss of data, as a precaution, it is always wise to ensure that you have a current iCloud or iTunes backup before performing the reset:

How to back up your iPhone, iPad, and iPod touch - Apple Support

When you are happy to proceed, you can perform the reset from iPad settings:

Settings > General > Transfer or Reset iPad > Reset > Reset All Settings

If the problem still doesn’t clear, the next step is to reset the iPad to factory settings:

Restore your iPhone, iPad, or iPod to factory settings - Apple Support

Using your iPad as a Home Hub is supported by iPadOS17:

Settings > Home > Use this iPad as a Home Hub - set to ON

Set up your HomePod, HomePod mini, Apple TV or iPad as a home hub – Apple Support

There is no Home in Settings at my iPad 10.2 2019 iPadOS 17.2.

Sad