i m not sure about now but what i found out at xbox one era. when u gift games to some one. the redeem side must be the region of the gift game side. example if u gift games from usa region store then, the one who receive the game have to use vpn for usa region… same as other country…

if use mastercard for argentina or turkey store, the name is my real name or the fake name? i use my real name it keep getting wrong info and after key in the fake name, it can get throught but fail at wrong region error.

i tested other way which success by buying turkey gift card then change my pc region to turkey then use vpn to turkey and open pc windows store app and redeem the gift card and lastly use xbox.com to purchase game at turkey store.

dont know why when use xbox.com to direct redeem the gift card also fail even using vpn set to turkey