Help with double take unknown face detection

hey all i have recently installed the double take add on and have been setting it up but have encountered an issue

i have set up automations to send specific notifications depending on the person at the door including one for unknown people but i dont believe double take is detecting people as unknown

here it shows an unknown person but tags it as someone known but as its below the similarity threshold it didn’t trigger but i would like it to trigger as an unknown person when it detects a face that is not similar to any trained faces

any help is appreciated