Hoping someone can point me in the right direction. When Amazon fulfills orders from our Shopify store that are identified as UPSM (UPS internal transfer shipments to USPS), Shopify does not recognize the carrier, and guesses that it is DHL. So the tracking numbers link to DHL and customers receive an error. The tracking number that is generated is always a USPS tracking number. I am looking to see how these UPSM identified packages can just be recognized as USPS links. Shopify will not help on this, they say it needs to be done on the Amazon side. Anyone else experience this or have a solve?
It is very frustrating to have so many customers receive broken tracking links, all because shopify is guessing the wrong carrier.