Search results page reverts de default language

Hello,

When I do a search on my site https://www.tagtom.com, the results are in the correct language, but the page always reverts to the default language (French).

I adapted some code on the searchform.php but it doesn’t seem to help:

<?php
$currentlang = get_bloginfo('language');
if ( $currentlang=="en-CA" ) {
  echo "<h2>Search</h2>";
  echo '<form method="get" id="searchform" action="' . site_url() . '/en/">';
}
else {
  echo "<h2>Recherche</h2>";
  echo '<form method="get" id="searchform" action="' . site_url() .'/">';
}
?>

I also tried :

<?php

 if(function_exists('pll_current_language')){
    $current_language = pll_current_language();
  $default_language = pll_default_language();
  if($current_language != $default_language){
      $language_subdir = $current_language.'/';
    } else {
      $language_subdir = '';
  }
}
?>

Any suggestions? By the way, my URLs are determined by language directory name.

Thanks in advance,

Stephan

https://www.ads-software.com/plugins/polylang/