Absence of Muse Sounds in the MIDI sound drop-down menu

1): When I go into the MIDI Sounds menu, I am unable to change the playback to a "Muse Sounds" option despite the fact that I have downloaded Muse Keys and I'm attempting this on a piano score.
2): I installed a beta version of MuseScore 4 a bit ago, and whenever I downloaded the full version a couple days ago I installed it "with MuseHub". I don't know if this has to do with my issue, but I know that I'm not using a beta application, because I'm opening Musescore 4 from the MuseHub menu, and I have the program selected to notify me of updates and whenever I run a check it says that it is up to date.

Thanks to anyone who read this, I hope it wasn't a waste of your time.

(Final note: in the "Reported version" drop down menu, the only version of MuseScore 4 that I can choose is "4.x-dev". For all I know this could be normal, but I just wanted to check that I wasn't submitting this issue in a developer section or something.)