The redirection shall remain in activity until you close your browser.
If your click above does NOT bring you to the Wordpress project:
1. First, check your browser's settings, to make sure it accepts cookies.
2. Call Mario, at 076 425-4810.
The setcookie function returned: 1
If the returned value is 0, the cookie was not sent to you.
If the returned value is 1, it means the cookie was properly sent... (but it does NOT mean your browser is necessarily ACCEPTING that cookie, though...)
We, on server side, have no way to know about this. That's why we have those instructions above...