Does not open on macOs Catalina

It should run fine on new mac.
@KrzysztofKowalczyk have you tried to bypass gatekeeper opening with ctrl + right click > Open ?
macOS bans most of apps you download from the internet. The instruction in the above comment should work. Also check https://support.apple.com/en-us/HT202491 for your information.
@KrzysztofKowalczyk have you tried to bypass gatekeeper opening with ctrl + right click > Open ?
That only works on machines that can run software from non identified developers. In secure enviroments it would not work.
macOS bans most of apps you download from the internet. The instruction in the above comment should work. Also check https://support.apple.com/en-us/HT202491 for your information.
@Rokt33r app should be properly signed, workarounds only work macs with unsafe settings. In secure environment you should not be able to change those settings:

The app is properly signed. I think the problem is that we didn't upload our app to Apple. I'll check it.
https://developer.apple.com/documentation/xcode/notarizing_macos_software_before_distribution/customizing_the_notarization_workflow#3087734
https://medium.com/@TwitterArchiveEraser/notarize-electron-apps-7a5f988406db
https://github.com/electron/electron-notarize
Most helpful comment
The app is properly signed. I think the problem is that we didn't upload our app to Apple. I'll check it.
https://developer.apple.com/documentation/xcode/notarizing_macos_software_before_distribution/customizing_the_notarization_workflow#3087734
https://medium.com/@TwitterArchiveEraser/notarize-electron-apps-7a5f988406db
https://github.com/electron/electron-notarize