The European Commission provides a platform for online dispute resolution (OS), which you can find here https://ec.europa.eu/consumers/odr/. We are willing to participate in an out-of-court arbitration procedure before a consumer arbitration board. Responsible is the general consumer arbitration board of the Center for Arbitration eV, Straßburger Straße 8, 77694 Kehl am Rhein, www.verbraucher-schlichter.de.