I have a similar problem. Droplet doesn't work. Last time i used KRpano (1.20.5) was about 2 moths ago and it worked then. I use KRpano on macOS Monterey 12.3. I also tried downloading new version of krpano (1.20.11) but my licence key doesn't work (lat updated on 14 April 2020). I will appreciate any help.