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Johnwilliomson

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    Johnwilliomson commented  · 

    This looks like a billing form validation issue rather than something you’re doing wrong. Most payment systems verify the postal/ZIP code against the one your card issuer has on file, not just the address you enter. Even a small format mismatch can trigger that error.

    Try entering only the ZIP/postal code (no spaces), typing the address manually instead of autofill, and making sure it exactly matches your card’s billing details. If you’re outside the US, some forms expect a specific ZIP format. Also, if the Contact Support link is broken, check their Terms or Privacy page for a direct support email.

    I’ve run into similar checkout issues while working on guides and site features over at https://stardewapkvalley.com/
    , and it usually comes down to how strict the payment processor is with billing info.

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