I am getting "Invalid Payment Request" when attempting to swipe any cards. I have tried multiple cards. My setup is a mag reader with Samsung S9. Please note: I have had success with this setup before. Thanks in advance for your help!
Update: I restarted the device and am now getting "Declined -The payment could not be completed Please try again" The two credit cards I have tried are good and have plenty of money in the accounts,
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