I don't know what to tell you except their own web site says download version 2.14 and they provide detailed instructions
here. Doesn't cost anything to try.
Here's the answer...
Here's how to detect Pegasus and other spyware using iMazing's spyware detection tool:
Launch iMazing on your Mac or PC and connect your iPhone or iPad via USB.
It works only for iDevices, but it's got to be run from your Mac, hence the macOS requirement, but I'm still not clear on the conflicting dates.