diff --git a/api/donorbox-proxy.php b/api/donorbox-proxy.php
index 6ec4ba5..3dc7280 100644
--- a/api/donorbox-proxy.php
+++ b/api/donorbox-proxy.php
@@ -129,12 +129,12 @@ if ($campaign === null) {
 }
 
 // Compter les donateurs réguliers actifs de la campagne ciblée uniquement
-$campaign_id = $campaign['id'] ?? null;
+// Filtre PHP sur le slug car le paramètre campaign_id de l'API n'est pas fiable
 $recurring_count = 0;
 $plans_page = 1;
+$first_plan_sample = null;
 do {
-    $plans_url = 'https://donorbox.org/api/v1/plans?per_page=100&page=' . $plans_page
-        . ($campaign_id ? '&campaign_id=' . urlencode($campaign_id) : '');
+    $plans_url = 'https://donorbox.org/api/v1/plans?per_page=100&page=' . $plans_page;
 
     $ch_plans = curl_init();
     curl_setopt_array($ch_plans, [
@@ -159,6 +159,14 @@ do {
     if (!is_array($plans)) break;
 
     foreach ($plans as $plan) {
+        if ($first_plan_sample === null) {
+            $first_plan_sample = $plan;
+        }
+        // Filtrer sur le slug de la campagne cible
+        $plan_slug = $plan['campaign']['slug'] ?? $plan['campaign_slug'] ?? null;
+        if ($plan_slug !== CAMPAIGN_SLUG) {
+            continue;
+        }
         if (isset($plan['status']) && $plan['status'] === 'active') {
             $recurring_count++;
         }
@@ -179,7 +187,8 @@ $filteredData = [
     'recurring_donors_count' => $recurring_count,
     'campaign_name' => $campaign['name'] ?? 'Unknown',
     'updated_at' => date('c'),
-    'plans_detail' => $plans_detail ?? []
+    'plans_detail' => $plans_detail ?? [],
+    '_debug_plan_sample' => $first_plan_sample
 ];
 
 $jsonResponse = json_encode($filteredData, JSON_PRETTY_PRINT);