I tried, but ¯\_(ツ)_/¯
Comments on The trouble with decommissioning a used FIDO security key
why not just use the reset tool for the yubikey? which effectively deregisters it.
I learnd the same. FIDO(2) is a very good Idea, but the most of the Services do not have a function to accept more the ONE Key.
Cqoicebordel