It's an area I have zero experience with, so I can't tell whether the original coding does not work or if my conversion of the coding is incorrect
No errors is good - I'll see what I can find in other ecommerce apps.
I have had to apply for a UPS account (again) and simply have to wait on them now - without it I cannot get a licence or access key. Without that key, it is near impossible to test and debug against their current requirements.