Hi, thanks for the response. So I created an empty mac project and submitted to the store via xcode and it worked, I can see it in TestFlight. I exported via xcode then do xcrun altool --upload-app -f ./app.pkg --type macos -u username -p password and it worked (message at the end: No errors uploading 'app.pkg'). I then extracted the .app file and used the productbuild to generate, and here I end up with a doubt about which ID to use. When I do security find-identity -v I have several items there, Apple Development: name, 3rd Party Mac Developer Installer: name, Developer ID Application: name. It works with the 3rd party one but if I use that in the pyinstaller then it says the identity cannot be used for signing code. Which one I use for pyinstaller that generates the .app and then which one I use in the productbuild call?

Hello, I used the identities as you mentioned and now it worked :) Thanks a lot for the help!

This seems to not work still on 18.1, is there an update about this?