AMEX Credit Card Always Failed on ZIP Code Validation

We have many complaints from customers about their transaction always failed when using AMEX card.
From our finding, when merchant enabling the postal code matching setting, none of the AMEX card will pass although the ZIP code is correct.
This issue just happen recently, not happening in the past. Any specific thing we should change for the API call?

Example of the ECommerce API response

      "source": {
        "address_line1_check": "pass",
        "address_zip": "55318",
        "address_zip_check": "fail", // this always fail
        "brand": "AMEX",
        "cvc_check": "pass",
        "exp_month": "06",
        "exp_year": "2027",
        "first6": "[REDACTED]",
        "last4": "1008"
      },

10 |2000

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