Hi everyone,
I understand that many of you received unexpected USPS shipping adjustments for orders shipped using First Class Package. Those affected by this issue would have seen charges from July 4th and 5th.
There was an issue with USPS and their billing system, which has since been resolved. All affected merchants should have received an email to their account owner email address detailing this. Depending on the status of these erroneous shipping charges, you may see either a shipping credit or a refund to resolve this.
If you have not received an email communication about this and believe you were affected, please reach out to our authenticated support channels for additional help. To access our authenticated support, please follow this link: Shopify Help Center. Next, you will want to follow the on screen prompts to sign in, choose your topic and issue and at the bottom of the help articles provided will be all available support options.
NOTE:: You do not need to file a claim with USPS for a refund. I saw some comments saying you had been redirected to USPS to file a claim for your packages. If your shipping label adjustments were caused by this system error you do not need to do anything. These charges will be taken care of without any claims required.