Just got the M5P today, took it up and took two RAW images of a church spire, one at normal magnification, and one at 2x. In Windows Explorer view, the 2x is magnified as it should be. In Windows Photos it's at 2x.
However, when I open it in...
Yes. None of the people who have described buying from South Korea here have report any problem.
However, warranty service and Care Refresh are available only in the country where the purchase was made.
Yes, since DJI only makes one Mini 5 Pro model, it will work in any country.
While it doesn't matter where you live, keep in mind that the DJI warranty only applies in the country where you purchased the drone.