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Dealing with payment gateway integration issues is always a bit of a headache, especially when you’re trying to keep the customer experience seamless. I’ve found that these types of connection errors usually stem from a slight mismatch in the API credentials or the webhook listener settings within Scriptcase.
Have you double-checked that your production keys are correctly mapped and that the firewall isn’t accidentally blocking the callback from FastPay? Sometimes a quick sync check between the two platforms is all it takes to clear up those ‘pending’ status loops.