Hello,

We seem to be seeing some issues with checkouts which are due to the USPS Shipping Estimator API timing not responding. This has been working flawlessly for well over a year, no recent changes.

Symptoms: White screen (occasional browser hang) upon clicking 'Checkout' or 'Estimate Shipping' with the USPS module enabled. Disabling the USPS module (UPS still working) seems to fix the issue altogether. UPS estimates pop right up, and checkout is able to continue. Otherwise, the person is not able to check out as they can't get past the shipping issues.

Tried going back to the "test" USPS server with no changes. Anyone else experiencing this issue?

Thoughts?