To ensure you have a legitimate "full" version, follow these official steps: Paessler PRTG Network Monitor licenses & pricing

Once you receive your license information (License Name and ~70-character License Key), follow these steps to activate the full version: Setup | Enter License Key - PRTG Network Monitor (PRTG)

PRTG Network Monitor offers a wide range of features that make it a popular choice among network administrators. Some of its key features include: