Winbox Register 3

https://fun-wiki.win/index.php/How_to_Read_and_Understand_Your_Winbox_4D_Result

When you first open Winbox, you'll need to register before managing your MikroTik router. The register dialog asks for a username and password, which you'll use for all future logins. It's a straightforward form that sets up your administrator account, so you don't want to forget those credentials. Once registered, the interface remembers you, and you can skip that step next time you connect.