I found my product on aliexpress with free shipping in 4-13 days, with 15-day buyer protection, shipped via USPS. When I placed my test order, the USPS option didn’t show up on dsers order fulfillment, only the long-shipping methods that aren’t free, like aliexpress standard shipping, cainoa standard, and more. Can I have some help as to why the USPS method isn’t showing up?
If it’s an app you’re talking about, I would reach out directly to the app.
But if you can’t see shipping methods in checkout, it usually means the shipping method(s) is not assigned to the product. Check Settings > Shipping and Delivery to solve that.