Since the new USPS shipping update on July 27 we have not had USPS shipping methods available in our cart. We have have applied the patch, but the shipping methods are still not showing up. We have a testing server with the same install of the cart and the patch seems to work fine on that cart, so we could move that over and write over our live cart, but then we would lose our sales and customer records from about a week ago. I'm looking for someone who can look over our install and figure out why the patch isn't working on the live cart and then fix whatever is causing the error. Please keep in mind that you are working on a live cart.
Hello Sir, we are certified magento developers, could fix this USPS shipping API issue. Recently we have already fixed it for many clients. Please refer PMB for all details.