diff --git a/UI_V2/flask_server.py b/UI_V2/flask_server.py
index 5ed4e68..cacc17e 100644
--- a/UI_V2/flask_server.py
+++ b/UI_V2/flask_server.py
@@ -37,40 +37,41 @@ app.logger.addHandler(_handler)
 def healthz():
     return {"ok": True}, 200
 
+# @app.post("/api/payments/ipn")
+# def ipn():
+#     try:
+        
+#         # Pass the whole request object, not just request.data
+#         data = verify_ipn(request) 
+
+#         app.logger.info("IPN OK: %s", data)
+#         return jsonify({"errorCode": 0}), 200
+#     except Exception as e:
+#         app.logger.exception("IPN verification failed: %s", e)
+#         return jsonify({"errorCode": 0}), 200
+    
 @app.post("/api/payments/ipn")
 def ipn():
+    # 1. Get the signature from the 'Verification-Token' header
+    token = request.headers.get('Verification-Token')
+    
+    # 2. If it exists, inject it into the location the SDK expects
+    if token:
+        request.headers.environ['HTTP_X_NETOPIA_SIGNATURE'] = token
+        app.logger.info("Mapped Verification-Token to X-Netopia-Signature")
+
     try:
-
-        app.logger.info("--- RAW REQUEST INSPECTION ---")
-        app.logger.info(f"Headers: {dict(request.headers)}")
-        app.logger.info(f"Form Data: {dict(request.form)}")
-        app.logger.info(f"JSON Data: {request.get_json(silent=True)}")
-        
-        # Check common Netopia signature locations
-        sig = (request.headers.get('X-Netopia-Signature') or 
-            request.form.get('data') or 
-            (request.get_json(silent=True) or {}).get('data'))
-        
-        if sig:
-            app.logger.info(f"FOUND SIGNATURE: {sig[:50]}...")
-            try:
-                import jwt
-                decoded = jwt.decode(sig, options={"verify_signature": False})
-                app.logger.info(f"DECODED POS FROM NETOPIA: {decoded.get('posSignature')}")
-            except Exception as e:
-                app.logger.error(f"Could not decode found signature: {e}")
-        else:
-            app.logger.error("NO SIGNATURE FOUND IN HEADERS, FORM, OR JSON")
-
-
-        # Pass the whole request object, not just request.data
+        # Now the SDK will find the signature in X-Netopia-Signature
         data = verify_ipn(request) 
-
-        app.logger.info("IPN OK: %s", data)
+        
+        # NOTE: Your log shows "status: 12" and "Invalid card number"
+        # The verification should now pass, even if the payment failed.
+        app.logger.info("IPN Verification Result: %s", data)
+        
         return jsonify({"errorCode": 0}), 200
     except Exception as e:
         app.logger.exception("IPN verification failed: %s", e)
-        return jsonify({"errorCode": 0}), 200
+        return jsonify({"ok": False, "error": str(e)}), 400
 
 
 @app.get("/api/payments/status")