Important Note: As of the latest updates, CroxyProxy does not officially sell "Premium IDs" or require an "ID full" to unlock features. The service is largely free with some bandwidth limitations on the free server. However, users search for this keyword hoping to bypass restrictions or access dedicated servers.
The term "full" in your query likely refers to the Premium (Paid) version of the service.
CroxyProxy is a web proxy service. It allows users to access websites indirectly, hiding their IP address and bypassing geo-restrictions or simple network blocks (such as those found in schools or workplaces). It supports various types of web traffic, including video streaming and social media.