That's curious because when I check my own endpoint I see the correct location. But I don't when I look at a friend's data...
https://api.chess.com/pub/player/proximo
{"avatar":"https://images.chesscomfiles.com/uploads/v1/user/6681776.6a383d7a.200x200o.6d9691519153.jpeg","player_id":6681776,"@id":"https://api.chess.com/pub/player/proximo","url":"https://www.chess.com/member/Proximo","name":"DW","username":"proximo","followers":192,"country":"https://api.chess.com/pub/country/NL","last_online":1564040093,"joined":1329435866,"status":"premium","is_streamer":false}
https://api.chess.com/pub/player/ElenaStamataki
Web page shows location as "England" https://www.chess.com/member/ElenaStamataki
API end point does not include "location" data