The field is used to return country code.
AF : Afghanistan
AX : Åland Islands
AL : Albania….
On my page first few was working at the begining. As we added more field, this field is not updating. After refresh in post admin ill always end on same value. In case of new entry Afganistan, because its first in select. If i want edit old one it will stay on previous value.
Rest of the fields is working fine.
Screenshot of field setting: https://cl.ly/2R3Q0g272J1u
Screenshot of frontend: https://cl.ly/0N0c013m1b0u