WPForms Custom Redirect not working

I’m not sure why wpforms_process_redirect_url doesn’t work. I used this instead.

Here’s my full code:

//Capture the wpform submit, and call the "processForm" function
add_action( 'wpforms_process_complete', 'processForm', 5, 4 );

function processForm( $form_fields, $entry, $form_data, $entry_id ) {

    $card_arr = array(797, 1104, 1103, 1102, 1101, 1038, 997, 996, 973, 812);
    $form_id = $form_data['id'];
    $variation_id = 0;
    $url = get_site_url();

    // Get the full entry object
    $entry = wpforms()->entry->get( $entry_id );

    // Fields are in JSON, so we decode to an array
    $entry_fields = json_decode( $entry->fields, true );

    //$form_data contains the user inputs
    //here you could validate your form
    if(!in_array($form_id, $card_arr)) {
        exit();
    } else if ( in_array($form_id, $card_arr)) {
        if($form_id == 797){
            if ( $entry_fields[4]['value_raw'] == 2 ) { //birthdays
                $variation_id = 806;
            }
            if ( $entry_fields[4]['value_raw'] == 1 ) { //encouragement
                $variation_id = 807;
            }
            if ( $entry_fields[4]['value_raw'] == 4 ) { //spiritual
                $variation_id = 809;
            }
            if ( $entry_fields[4]['value_raw'] == 5 ) { //greeting
                $variation_id = 810;
            }
            if ( $entry_fields[4]['value_raw'] == 6 ) { //holiday
                $variation_id = 808;
            }
        }
        $url .= '/cart/?add-to-cart=82&variation_id='.$variation_id;
        wp_redirect($url);
        exit();
    }
}