If you're using USPS API (real time shipping rates) on your website, check to see if they're working properly.  USPS decided to change the API code over the weekend and didn't tell anyone--it seems to have broken pretty much everyone's ability to get shipping quotes. On my site USPS shipping options weren't showing up and so domestic orders were limited to flat rate or UPS and international orders couldn't be placed.Â
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From other forums online it looks like a lot of businesses lost a lot of money this weekend over this.






