Incorrect carrier assigned to parcels

I chose UPS for all three of my packages I’m suppose to ship out today… but when I go and look at the details it says USPS for 2 and ups for one. And I’m still unsure about the one that says ups cause I was informed that all their tracking numbers start with 1Z. I packed all 3 packages in ups bags. And for 2 packages I can’t even create a shipping label.

I did have 1 day shipping on. Could that be a reason they automatically chose USPS?

I also created a shipping template but every time I go and look to see which one is chosen it says migrated template and not the one I created.

Thank you

For the one with UPS in the details, check the tracking number format later. One-day shipping might default to USPS. Migrated template issue could be a glitch, try recreating it. Contact seller support for assistance.

For the 2 that say USPS, check the delivery address. UPS & FEDEX do not deliver to PO Boxes and the shipping would have defaulted to USPS automatically.