Invalid Passkey Notification for Fairfax County Public Library

I was going through my passkey notifications in Watchtower, and I have a notification for 

https://fcplcat.fairfaxcounty.gov/logon.aspx  .  I logged in and went into my account security settings to enable a passkey, but there is no mention of one. I can only change my password. 

Is there a way to correct the notification ? AFAIK, passkeys are not supported. 

Support info:

1Password for Mac 8.12.22 (81222017)