Redirection Not Ocurring

In some use cases redirection is not occurring because there is no exit after header call. Please adjust cf-redirect.php around line 74 as follows:

header( 'Location: ' . esc_url_raw($s['url']), true, sanitize_text_field($s['type']) );
exit;

On a separate note, please consider using wp_redirect instead of header.

Cheers!