Can't use passkey to log in to Creative Cloud Desktop App

Hi, community!

Does Adobe's passkey implementation leave a lot to be desired? Why can I log into my Adobe account just fine on my web browser, but when I try to log in to the Creative Cloud desktop app, it does not work? It tells me to try another option. It makes no sense. I have tried signing out, quitting, rebooting, deleting and recreating my passkeys to no avail.

Web browser sign in: passkey works great

Creative Cloud Desktop app sign in: passkey does NOT work.

I'm running on two machines: An M1 MacBook Pro and an M3 MacBook Pro. Same behavior on both machines.

Please don't refer me to the Adbobe "Having trouble signing in" or "How to use passkeys" documents. I've tried everything in them and I am super frustrated.