I’m tempted to push the update button and see what happens… we know we can go backwards…
I did the upgrade and it downloads the 21.1.4 version not the latest version. I don’t know if it only goes up one version at a time or not. Anyway it did not work. I was able to go back to the 20.6.2 and it works. I would say there is an issue with this intel based mac and the new versions. @langmuir-aksel
Worth a try though. 
I came looking for help for the same/similar problem.
Intel Mac running Mac OS 12.4 and tried FireControl 21.1.5 and 21.1.4 - NEITHER connect successfully. The whole UI seems unresponsive.
Downgrading to 20.6.2 seems to work (for me at least).
Langmuir - what says you?
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I just upgraded my macos to Monteray 12.4 and all the sudden Firecontrol 21,14 doesn’t connect. Not happy.
I have to use firecontrol 20.6 on one of my macs.
This has been solved with Monterey 12.5 and Firecontrol 21.1.5!
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