I can't use this with macOS 10.3.6?

[LionAlex 0]

I try to download this file embyserver-osx-x64-4.7.14.0.zip from official site because is the reference for macOS 10.13. I've macOS 10.13.6. But when I try to lunch the app, I receive the message attached. Why?

[visproduction 375]

Related?  Many things to try...
 https://discussions.apple.com/thread/256358038