A cookie refers to a file that is sent for the purpose of requesting permission to be stored on your computer, by accepting said file it is created and the cookie then serves to have information regarding web traffic, and also facilitates future visits to a web recurrent. Another function that cookies have is that with them the websites can recognize you individually and therefore provide you with the best personalized service on your website.
Information regarding online dispute resolution pursuant to Art. 14 Para. 1 of the ODR (Online Dispute Resolution Regulation):
The European Commission gives consumers the opportunity to resolve online disputes pursuant to Art. 14 Para. 1 of the ODR on one of their platforms. The platform (http://ec.europa.eu/consumers/odr) serves as a site where consumers can try to reach out-of-court settlements of disputes arising from online purchases and contracts for services.