I am developing billing using RevenueCat. I am getting an 520 error on POST to /receipts after a purchase is completed. Google Play shows window of purchase completed but 5 minutes after I recieve an email of cancellation. These are the logs of the error:
[Purchases] - WARN W ⚠️ Unable to start a network connection due to a network configuration issue: https://api.revenuecat.com/v1/receipts
[Purchases] - DEBUG D ℹ️ API request started: POST /receipts
[Purchases] - DEBUG D ℹ️ API request completed with status: POST /receipts 520
[Purchases] - ERROR E ‼️ There was a problem with the store.