We have also asked our customer to clear cache, etc. and she was still having difficulty.. We're going in the backend and creating an invoice, etc. But this is such a hassle..Another customer found a way around by using our freight services for a sim...

We have just recently started getting this error, too, in the past couple of days.. I was wondering if it was a shopify or shipstation problem, but it appears to be a shopify? I was nervous it was because we switched from FedEx to UPS, but this threa...