i propose for Editor to be able to connect via other midi ports
this could be great option because if your MH is connected to other device than your computer like rpi ,
than of course you need to disconnect and connect back in order to edit.
Then you have to do chmod +x MidihubEditor-arm64_1.15.3.AppImage on the file (or enable Execute permission via file’s Properties) to mark the file as runnable.