I have implemented In-App Purchase into my application. I have used Auto Renewable Subscription. I have implemented 1 API that send sufficient information to backend server after successfully purchased from app. Problem: For my many customers successfully purchase subscription and we place their data to purchase table. But for few customers successfully purchase product but we wont track a data after purchased. From backend, we also can not track the data. NOTE: Its not a server problem Those few customer sent their purchase valid receipt and we found on common problem. Customer said, we have purchase this product through PayPal or ApplePay. But I have not integrated none of this payment method. Example: (In receipt) Payment Type: Paypal or Payment Type: Apple Pay Can you please help me.