Just got off the phone w/USPS and got switched to production server. They added the label-generation capability (which uses the secure production server) and the rate estimate ability (only available on non-secure production server) - still waiting for address verification access... HOWEVER...
Here's my current issue: I'm no longer getting invalid authentication or V4 messages but am getting:
"The remote server returned an error: (500) Internal Server Error." as I attempt to checkout at the shipping stage.
I'm using nopCommerce 2.65 and the built-in "shipping rate computation" form.
Is this a misconfiguration on my part, is it a known issue that goes away after some sort of propogation on the USPS servers or something else? FYI- I've verified my username & pw are correct.
Thanks