Suddenly, our USPS Shipping is no longer available on our online shop. The following appears: "We are unable to find a USPS shipping quote suitable for your mailing address and the shipping methods we typically use. If you prefer to use USPS as your shipping method, please contact us for assistance. (Please check that your Zip Code is entered correctly.)"
Set debug notification via email and received the following: <?xml version="1.0" encoding="UTF-8"?>
<Error><Number>80040B1A</Number><Description>API Disabled: RateV3. The RateV3 API is no longer available. Please follow the "RateV3 to RateV4" transition guide in the announcements section at www.usps.com/webtools to migrate to the latest version or contact your software provider or shipping administrator for assistance.</Description><Source>USPSCOM:oAuth</Source></Error>
Reviewed the transition guide off the usps announcements, but have no idea how to fix this! Please help!
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