Age verification

You can add the “Age verification” field either using the Custom Fields extension or by for example installing the GDPR for WPAdverts snippet https://github.com/simpliko/wpadverts-snippets/blob/master/gdpr-compliance-for-wpadverts/gdpr-compliance-for-wpadverts.php and customizing it on lines 42 to 60 and on the line 67 so it will ask the user to verify his age instead of accepting TOS.

How to install the snippet you can read here https://github.com/simpliko/wpadverts-snippets/ at the bottom of the page.