Hello, Antnw.
Welcome to Microsoft Community.
From your description, I understand that you intend to use the Microsoft Store app but it prompts that the current region is not available.
I understand your feelings.
Please try to change the region in the settings.
The region judgment of the Microsoft Store is only related to the region in Windows settings.
Open Windows Settings-> Time and Language-> Region-> Change to the United States or other regions.
Then restart the test.
Usually, this can solve the problem. If not, can you provide some information?
This may also be related to the Windows version. Some systems cannot be used due to enterprise policies.
Have you logged in to an enterprise account on your computer?
Can you share the system version currently running on your computer?
Win+R Open WindowsRun-> Enter "winver" and open-> Share version information.
Thank you for your patience and cooperation.
If there are any updates, please feel free to reply.
Best regards.
Malygos.Z | Microsoft Community Support Specialist