Hello, I am connected to the USPS with the latest USPS API key and Secret.
I have selected the Commercial rates in USPS, but it doesn't seem like I am getting the reduced commercial rates.
Whether I choose commercial or retail, I get the same high retail prices.

I think USPS requires size to return commercial prices, but there is no place in the product attributes to put a package size.
Am I missing a setting somewhere?
I appreciate any help
Thank you,
Srishti