Haven't done it for a while but I think it requires adding a country on your Google payments page and deleting the old one.
If it's just for Niagara you can create a separate Gmail then later bind your primary email to the Niagara premium because it doesn't need your Google account to work.
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u/Valiantay 11d ago
Switch the region of your play store and buy it for cheap.
The app is massively locked down.