Playback disabled
I have windows 10, and use Bluetooth keyboard and mouse, I am assuming that is why the playback in musescore 3 is disabled. When I go to I/O there are no options to choose from (no devices, no API).
This means I can't use the app if it cannot be resolved.
Comments
I'm using blutooth keyboard and mouse too. Not related to playback at all.
But see https://musescore.org/en/faq#faq-301733