Have you tried this yet? (From the "Legal" section of the Hetzner website)

> Online Dispute Resolution in accordance with Art. 14, para 1 of the EU Online Dispute Resolution Regulations

Online dispute resolution in accordance with Article 14, Paragraph 1 of the ODR-VO (Online Dispute Resolution Regulations): The European Commission has established a platform for online dispute resolution (ODR). You can visit the platform at http://ec.europa.eu/consumers/odr.