Set up a cron job to check your IPN log endpoint daily. If you receive a 500 error (server failure) or a 404 (endpoint missing), your log will show "Retrying" – potentially leading to unfulfilled digital downloads.
Best Practice: Log every IPN webhook to your own database. Compare your internal log to PayPal’s log weekly. If they mismatch, your server likely dropped packets. paypal logs
Knowing where to click is half the battle. PayPal has redesigned its interface several times, but the log access remains robust. Discrepancy between merchant ledger and PayPal balance
