As with other people, I'm receiving the following error message:
"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.)"
I have, in this exact order, attempted the following to no avail: Uninstall all shipping modules via admin, delete all module php files from \includes\modules\shipping, reinstall and configure a sole USPS module, curse angrily upon yet another failure.
I'm using a fresh install of the latest ZenCart. I have had my USPS profile switched to the production server.
What's the deal?