Authentication is not working anymore

[ArtemKiyashko]

Linking home-assistant/core#161038 here as this repo seems to be a root cause:

Logger: homeassistant
Quelle: components/tado/config_flow.py:85
Erstmals aufgetreten: 07:17:21 (8 Vorkommnisse)
Zuletzt protokolliert: 07:32:32

Error doing job: Task exception was never retrieved (task: None)
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 82, in _wait_for_login
    await self.hass.async_add_executor_job(self.tado.device_activation)
  File "/usr/local/lib/python3.13/concurrent/futures/thread.py", line 59, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.13/site-packages/PyTado/interface/interface.py", line 107, in device_activation
    self._http.device_activation()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 584, in device_activation
    if self._check_device_activation():
       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/PyTado/http.py", line 575, in _check_device_activation
    raise TadoException(f"Login failed. Reason: {token_response.reason}")
PyTado.exceptions.TadoException: Login failed. Reason: Bad Request

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/tado/config_flow.py", line 85, in _wait_for_login
    raise CannotConnect from ex
homeassistant.components.tado.config_flow.CannotConnect

https://github.com/home-assistant/core/blob/dev/homeassistant/components/tado/config_flow.py#L82

UPDATE: re-linking this to more relevant: home-assistant/core#160472