To set up passkey, it is important that you have already activated passkey on your phone or tablet. For Samsung phones, please check the following instructions for setting up Samsung Pass: https://www.samsung.com/de/support/apps-services/samsung-pass-einrichten-und-verwenden/
Once Samsung Pass is set up and activated, you can set up passkeys under Kaia back pain. After logging in with email and password, the wizard for setting up passkey should start. In case of an error message when logging in, please exit the Kaia app or restart your mobile phone once.
If this does not help, please contact us by phone, Monday to Friday from 9:30 to 17:00. Our telephone number is: 089 904226740