Playback, mixer, synthesizer and audio I/O are completely greyed out.
I have this problem since I've installed Musescore. I work on a macOS Catalina 10.15.4 and I have the 3.6.2 Musescore 3 version. I already saw all the topic forums and already consulted the FAQ "How to restore sound if playback stops working"; I followed every single step but nothing's changed. I'd really like solving this problem because I need to use this software for my academic studies.