Hi Eldar. Sorry to hear you’re experiencing these issues. If you haven’t yet, please try the following steps on your new MacBook Pro.
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In your Applications folder, move the Roon app to the trash
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Click anywhere on your desktop and on the menu bar it should say Finder
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On your keyboard, hold down the option key and then on the menu bar click Go
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Click on where it says Library
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In the Library window that opens select the Roon folder and RAATServer folder - move both folders to the trash
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In the Library window again, open the Caches folder and inside it, select the com.roonlabs.raat folder then move it to the trash
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Go back to the Library window again, open the Saved Application State folder and inside it, select the com.roon.Roon.savedState folder then move it to the trash
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Restart your MacBook Pro, download Roon for macOS and install it into the Applications folder
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For good measure, restart your iMac where your Roon core resides and then try launching Roon on your MacBook Pro to see if you are able to connect to your Roon core
I hope this was helpful but please let me know how it goes. Thank you!