CB ID Verify

Is there any Documentation for ID Verify?

I'm looking to Verify the Birthdate they enter on the site with what's on there ID to make sure they are over 21
I see Birthdate Field under advance but I can't get anything to show up there 

What is Verification Flow ID?

CB ID Verify just verifies their identification. The field filters are just that filters. They can be used to exclude/include someone from/for verification. It's not meant to be used to verify a fields authenticity. Typically you'd block specific content on your site that requires ID verification (e.g. specific URLs, menu items, entire extensions, etc..). As for documentation please press the "Toggle Inline Help" button to see parameter descriptions as the field parameters have explanations for their usage.

To clarify further the purpose of the plugin is to integrate with the following ID Verification services.

stripe.com/identity
withpersona.com/

In the "ON" section you'll specify where you want this verification to take place and for whom. So for example you could have it apply to a specific category of articles, but only if they're in a specific country.

If those conditions are met the article will be blocked and request id verification. What is verified depends on how you've configured those services. For example you could verify age, government id, various other legal documents, selfie, etc.. that's all configured at Stripe or Persona.

Once that is completed they'll be granted access to those articles if verification was a success. If they are logged in during all of this the verification process is attached to their account so they won't have to verify again.