This week, I set up a new "Apple Silicon" Apple MacBook Air (M2, 2022), which is running the latest macOS Monterey 12.6.
I downloaded & installed the Yubico Authenticator via the Mac App Store on my new MacBook Air, rather than download it from yubico.com using a web browser.
The Mac App Store...
I downloaded the Manager, and pug in the key, and, nothing...
Even their demo site shows nothing, and it's not in System Report in About This Mac. Is it compatible? I can't find anywhere it says it's not compatible. Odd?