Paypal Invoice Already Paid
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Hi! I’ve tried looking everywhere but haven’t seen anything regarding this particular Paypal error message. Since making my shop live, every order I place gives me the following message after attempting to checkout with Paypal: “This invoice has already been paid. For more information, please contact the merchant”. I’ve tried placing the order logged out and logged in, I’ve tried deleting all the previous orders (which all have different numbers, so it’s not a duplicate order number issue), I’ve tried using different browsers, and I’ve set my paypal selling preferences to for “Block Accidental Payments” to “No, allow multiple payments per invoice ID”. Nothing is working and my deadline is today. Please help! Thank you!
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