Funcion change current lenguage and page redirect

Hi!

I need to filter what language users in each country can see. I have to redirect a page if the country is not correct.

I found the code below, in the browser I can see that the language has changed but I still receive the same page and I can not access the page of the new language
PLL()->curlang = PLL()->model->get_language( 'de' );

I tried this and it didn’t work:

function get_correct_page() {
   if( get_location_geoIP() == 'DE') {
      $current = pll_current_language();
      if( $current != 'de' ) {
	global $post;
	$post_id = $post->ID;
	$post_id = pll_get_post($post_id, 'de');
	$url     = get_permalink($post_id);

	PLL()->curlang = PLL()->model->get_language( 'de' );

	wp_redirect($url);
	exit();
      }
   }
}
add_action( 'wp', 'get_correct_page');