Nico free

Thanks for your answer !
Yes I read this (and many other !)
I tried with bottom, no success.

If I go to
https://localhost:8888/rew/ok
It displays the page named ‘test’, it’s ok.

but I want the opposite :
If I write this url
https://localhost:8888/rew/index.php?pagename=test
It should display the url like this :
https://localhost:8888/rew/ok

I want to use later with variables, but I want to test with this very simple example.
But no way …

The solution is …

function contactform7_subscribe2($cfdata) {

    $submission = WPCF7_Submission::get_instance();
    $formdata = $submission->get_posted_data();
    $user_name = $formdata['your-name'];
    $user_email = $formdata['your-email'];
    $list_id = "3";

    $MailjetApi = new WP_Mailjet_Api(get_option('mailjet_username'), get_option('mailjet_password'));
    $result = $MailjetApi->addContact(array(
				'Email'		=> $user_email,
				'ListID'	=> $list_id
			));
}
if(isset($_POST['opt-in'])) {
    add_action('wpcf7_mail_sent', 'contactform7_subscribe2', 1);
}

Thank you for your answer.
The second problem happens on all pages except the Settings page.
This alert appears just below the title Contacts, Campaigns, Statistics, before the iframe tag.

Perfect !

same problem !