Update app.py

app.py

@@ -563,7 +563,7 @@ def order_summary():
         coupon_result = sf.query(f"""
             SELECT Coupon_Code__c 
             FROM Referral_Coupon__c
-            WHERE Customer_Email__c = '{email}' AND Coupon_Status__c = 'Active'
+            WHERE Referral_Email__c = '{email}' AND Coupon_Status__c = 'Active'
         """)
         
         discount_percentage = 10  # Apply 10% discount