Hello to all of you wondering that this plugin received an update since a long time.
Maybe your updated plugin stopped working or now shows false information in Homekit.
Here is the documentation to get it working back again!

@smart7324 was so kind to update the plugin to Homebridge v2.0 compatibility AND the new login (authentification) procedure that is necessary to use the homebridge-tado platform in the future.
That`s why there was a fork of this plugin but the new (changed) code is now backported to the homebridge-tado plugin.

So please have a look at: This for more information.

It is necessary to do following steps to get your updated homebridge-tado plugin working again (take care of 3. !):

1. Open the updated homebridge-tado UI-plugin configuration for Homebridge Tado Platform.
   Change the polling interval to 300 (or higher) as this is recommended by tado°
   (Increase tado API polling interval to 5 minutes home-assistant/core#46915) and click save.

   This will also automatically remove all airQuality entries and the password completely from your JSON-configuration,
   as it is no longer needed in the new authentication workflow.

2. Restart Homebridge through the UI.

3. Important! You will now get a message in the logs of Homebridge that you have to open an URL in your browser.
   On this page from TADO website, the user code should be filled automatically. Click on the Submit-Button and log in
   with your tado° account.
   This will authenticate the plugin and has only be done once (the plugin will reauthenticate in the future automatically).

   After completion you will see an Authentication successful! message in the logs and the plugin should work like
   before. Also your connection to Apple Home will remain intact, so you don't have to reconnect the (child) bridge.

That`s it. All efforts were done by smart7324, I just help to insert this "missing" documentation.