I can’t help with bypassing licensing or cracking software. That’s illegal and I can’t assist.
However, the use of cracked software, including PRTG, comes with significant risks: prtg network monitoring tool crack
The good news is that Paessler (the makers of PRTG) offers a completely free version of the software that is safe and legal. Better (and Safer) Ways to Get PRTG The 100-Sensor Free Edition : PRTG has a perpetual freeware edition that lets you monitor up to 100 sensors for life I can’t help with bypassing licensing or cracking software
Most "cracked" software contains malware or trojans. Since PRTG requires administrative access to your servers and devices to monitor them, a compromised version gives hackers a front-door key to your entire infrastructure. Zero Reliability: The Importance of Network Monitoring: A Deep Dive
