register.php:68 Mixed Content: The page at 'https://piwigo.org/ext/register.php' was loaded over a secure connection, but contains a form that targets an insecure endpoint 'http://www.google.com/cse'. This endpoint should be made available over a secure connection.

register.php:1 Mixed Content: The page at 'https://piwigo.org/ext/register.php' was loaded over HTTPS, but requested an insecure script 'http://www.google.com/recaptcha/api/challenge?k=6Lc8WcESAAAAAAOxNhHCytt0jss0i72d-9R8N7QF'. This request has been blocked; the content must be served over HTTPS.

Could you fix this so people can register?