I am in the same boat.  Ship 60+ UPS packages a day, using QB Enterprise, and after several hours in contact with support, I have been told it's an issue they need to work out.  I do not have confidence that this will be resolved in a speedy manner.  I have over a dozen trouble tickets STILL OPEN from over the past 3 years that are still "known issues".  I don't feel this is an enterprise class software, especially with the lack of support.  You pay $900 / yr.  I pay $1500 / mo with 30 users.  Sure doesn't feel like I am getting my moneys worth.  I did get USPS (stamps.com) and FedEx to work, but having to put a CC # in is insane.