IAP TestFlight subscription of for the wrong country store (Mac)

Hi there,

When I build my app in Xcode using a synched AppstoreConnect Storekit file, when using subscriptions, I am sent to the correct (for me) UK store to purchase a subscription.

However when using the same build as a TestFlight App I am presented with the US store.. If I try to purchase a $ subscription I get the error: Account not in this store Your account is not valid for use in the U.S. store. You must switch to the U.K. store before purchasing

If I try to use the presented Change App Store button - I get Unable to Complete request Error

My AppStore on my Mac is set to the UK store.. How can I get the TestFlight version to present the correct store locale?

Many thanks!

IAP TestFlight subscription of for the wrong country store (Mac)
 
 
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