Merchants selling in the EU can display privacy pop-ups in their stores through the app, providing customers with clear and transparent information about data collection and usage practices. These pop-ups allow customers to review and manage their cookie preferences, giving them the option to consent to or decline various types of cookies, such as those used for analytics, personalization, or advertising. By enabling customers to complete the cookie permission preference setting, merchants ensure compliance with EU privacy regulations like GDPR, enhance customer trust, and create a more transparent shopping experience.