Look at the logs. You did not say when the pin pad decline the transactions. Ex. after swiping a card, after entering a PIN number or when authorizing...
I think you have to check the terminal to which this pinpad is connected to
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Look at the logs. You did not say when the pin pad decline the transactions. Ex. after swiping a card, after entering a PIN number or when authorizing...
I think you have to check the terminal to which this pinpad is connected to