Keyboard shortcuts are disabled on macOS
Is there any reason the keyboard shortcuts are disabled (and greyed out) on macOS? Here's a screenshot:
https://transfer.sh/pAWTJX/Screenshot 2021-09-22 at 00.24.28.png
https://transfer.sh/pAWTJX/Screenshot 2021-09-22 at 00.24.28.png
Have you tried restarting your computer?
I think I see the problem though: the Tools menu only has one shortcut, which a one I set myself in the macOS Keyboard settings. It seems Zotero doesn't play nicely with that, but the built-in shortcuts in e.g. the File menu are working. Sorry for the false alarm in that regard!