diff --git a/src/dealer-claim/components/request-detail/WorkflowTab.tsx b/src/dealer-claim/components/request-detail/WorkflowTab.tsx
index fcd0774..92e8a89 100644
--- a/src/dealer-claim/components/request-detail/WorkflowTab.tsx
+++ b/src/dealer-claim/components/request-detail/WorkflowTab.tsx
@@ -1537,11 +1537,12 @@ export function DealerClaimWorkflowTab({
         return;
       }
 
-      const baseUrl = import.meta.env.VITE_API_BASE_URL || 'http://localhost:5000/api/v1';
+      const baseUrl = import.meta.env.VITE_API_BASE_URL || '';
       const response = await fetch(`${baseUrl}/dealer-claims/${requestId}/e-invoice/csv`, {
         headers: {
-          'Authorization': `Bearer ${TokenManager.getAccessToken()}`
-        }
+          'Authorization': `Bearer ${TokenManager.getAccessToken() || ''}`
+        },
+        credentials: 'include'
       });
 
       if (!response.ok) {
@@ -1582,11 +1583,12 @@ export function DealerClaimWorkflowTab({
       setShowInvoicePdfModal(true);
 
       // Fetch PDF securely via Authorization header (not in URL query)
-      const baseUrl = import.meta.env.VITE_API_BASE_URL || 'http://localhost:5000/api/v1';
+      const baseUrl = import.meta.env.VITE_API_BASE_URL || '';
       const response = await fetch(`${baseUrl}/dealer-claims/${requestId}/e-invoice/pdf`, {
         headers: {
-          'Authorization': `Bearer ${TokenManager.getAccessToken()}`
-        }
+          'Authorization': `Bearer ${TokenManager.getAccessToken() || ''}`
+        },
+        credentials: 'include'
       });
 
       if (!response.ok) {