I have scoured Google, PRTG manual, and support forum, but cannot find a solution to my issue. I am running PRTG v7.5. I have deleted many probes from the administrator portal with no issues. However, after 1-2 minutes, or even a day, they re-appear as disconnected. How do I forcibly remove these for good? They keep coming back. :( Some of these clients we no longer have access to their networks.
Here are screenshots: