I am trying to add a signature to the Preview using Tools > Annotate > Signature > Manage Signatures
I then click on Create Signature
Note that I need to use a camera-ready picture of a handwritten signature - (not mouse created). So in the dialog I choose "Camera", then put the page with signature in front of the camera and click Done
But then the "new" signature is not created: the same single entry is still there (which I did years ago in a much older version of macOS).
Why is a new signature not being created? I am on Big Sur.
Update Here is what is in my Keychain Access