The problem with using the header code is you can only send it to one page (without programming the original page). Can’t this widget not refresh the page?
Our shipping zones are working for the USA zone. UPS shipping is not. The error says it is missing the State in our API call. I checked the API call and it is missing. Seems like this plugin is not compatible with the USA.
The custom origin is turned off. I have tried that setting as well. There is no option to set State when custom origin is selected. Perhaps I have an old version of the plugin?