Vendor can not shipping to storefront country

We created a vendor in China. The vendor does not use fulfillment.
(Currently, delivery is impossible even if you use a warehouse using fulfillment.
Previous article Warehoses addon do not work)

The vendor’s address is written in China.
Store front is Korea.
China vendor have fedex shipping method

The backend log shows success.


However, customers will not be able to collect this shipping cost at checkout.
from china shipping to other country is no problem.
ex) shipping to the us works
(Even though FedEx calculates correctly)
but Can not shipping to storefront country.

It’s really hard to figure out why this keeps happening.

Please provide step-by-step instructions on how to reproduce this issue in the standard installation.