The delivery doesn't go through, but it's through buy shipping and I did my job, which is send the package out on time. If any problem happened, will I still get paid for the sales?

I contacted Amazon support team, and as expected, they can't provide any help but just worse the case. They said even though it's buy shipping, but if customer claimed they didn't receive the product then you will not be paid, you need to reach out to the carrier if you want compensation. This is frustrating, the buy shipping service has nice promises, but sadly it will never come true.

What's worse is that, the carrier SF Express, not able to return the product back to me. None of these parties is able to solve the thing. The end carrier is USPS, they said the address provided doesn't support by USPS (?), they are just not going to deliver it and they refuse to be liable. Ibsaidnat lease inform me, USPS said no that's not there responsibility (?). SF Express said the package will not be returned to them, even USPS says it will. Amazon said even though it's buy shipping, if anything happen don't find Amazon, find other party pls. What a ridiculous world.