This topic solves

If the qualified signature with Mobile ID fails, it may be because your Mobile ID is not correctly registered for the electronic signature or the registration has expired. In this case, you must register again for the electronic signature. You can check the signature readiness of your Mobile ID for Switzerland and / or Europe at the following link and also find out where you can register: check-signature.scapp.swisscom.com

If the result of the check does not reveal any problems, please contact our support team (support[at]deepbox.swiss) for further assistance.