Hello there,
What is the version of the Edge browser you are using ?
Beginning with build 17723, Microsoft Edge supports the CR version of Web Authentication. I would suggest you to update the Edge browser and see if that helps.
Introducing Web Authentication in Microsoft Edge https:// blogs.windows.com/msedgedev/2018/07/30/introducing-web-authentication-microsoft-edge/
A world without passwords: Windows Hello in Microsoft Edge https:// blogs.windows.com/msedgedev/2016/04/12/a-world-without-passwords-windows-hello-in-microsoft-edge/
----------------------------------------------------------------------------------------------------------------------------------------
--If the reply is helpful, please Upvote and Accept it as an answer–