The European Commission provides a platform for online dispute resolution (OS): https://ec.europa.eu/consumers/odr/. You can find our e-mail address in the legal notice above.
We participate in a dispute resolution procedure before a consumer arbitration board. The universal arbitration board of the Zentrum für Schlichtung e.V., Straßburger Straße 8, 77694 Kehl am Rhein(https://www.verbraucher-schlichter.de) is responsible.