The order of how i installed URL Snooper running with NPcap drivers (on a system that doesnt know anything about them yet)
step 1: Download and install NPcap (if WinPCap was previos installed, it will tell you and let you set "compatible mode")
step 2: Download and install URL Snooper, during installation unmark "Install WinPCap"
step 3: Run URL Snooper, have URL Snooper set active to grab any content, visit any HTTPS site and watch how fast the URL Snooper list grows.
Maby one of them needs administrative rights to set itself up properly, i cant remember that point, i guess i used admin for both.
If it matters, i use Windows 10 x64 latest release build, all works fine the way i described above.