How add checkbox for GDPR?

Hi,
to add the GDPR compliance checkboxes at the end of [adverts_add] shortcode you can use the “GDPR compliance for WPAdverts” snippet https://github.com/simpliko/wpadverts-snippets/blob/master/gdpr-compliance-for-wpadverts/gdpr-compliance-for-wpadverts.php

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

thank you!