Specific Country version of the App

Hello, one of our published app shows up in US App Store, but not in Australia App Store. It is enabled for Australia from Availability section.

Ultimately we need to publish the same app in Australia and use Australia domain name for API service. How do we publish it for Australia and have it show up in their store and change target API URL based on region or locale? Is it prefer to detect locale/region and change URL or publish localized version for the country? Thank you.

Specific Country version of the App
 
 
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