How do I know that a comodo authentic site badge is real or not

Hello I’m a nube to this forum so apologies if I’ve posted this wrong
I have just signed up to a language site cantonese101 as part of the sign up even though I only signed up to the freebie account there was a “free offer” for a certainamount of “tools” for just $1 it then took me to their checkout page where there is a comodo secruity badge how can I tell whether this is genuine?