Why do you have to enter your Miele username and password again in the Amazon Alexa app?

If you haven’t used the Miele skill for 30 days, you will automatically be logged out of the Alexa app.

If you have changed the password for your Miele user account via the Miele app or Miele website, you will also be logged out.

This is to protect your security and the security of your user data.