This is the most common use of the "Registrovat" button. It allows a new user to create a personal profile by providing identification data (such as an email and password) to access non-public sections of a service .
For developers and data scientists, "Registrovat" (Registration) is a technical process of cataloging resources so they can be found and reused. Register With Geodatabase (Data Management)—ArcGIS Pro Registrovat
In many technical applications, "Registrovat" refers to linking a physical device to a digital account to activate its functions or warranty. This is the most common use of the "Registrovat" button