Is the K10 version of post #36 of this thread the same version as the K10 (1) that gets downloaded from the plug-ins area here?
The plug-ins version is at URL
but its name is
USPS_2017_09_16_K10 (1).zip
so it looks like a different file. I haven't done a file compare.
I have the K10(1) version running, and it's showing First Class USPS shipping pricing with the store's Retail-Online switch set to Retail.
...which means (retail vs. online) what? I can't find any documentation on that on the forum.