In Europe, the ePrivacy Directive restricts certain features in messaging apps like Facebook Messenger, Instagram, and WhatsApp. This includes advanced options such as conversion optimization and click-to-message features due to the need for stricter data segregation and privacy compliance. These limitations are a result of regulatory requirements to ensure messaging data privacy and security, which have impacted the availability of some functionalities typically used in advertising campaigns. More details here: about.fb.com/news/2020/12/changes-to-facebook-messaging-services-in-europe/
