Edit the list of countries from these theme php files:
1 – themes/wpresidence\libs\theme-admin.php
$countries = array(__("Afghanistan","wpestate"),__("Albania","wpestate"),__("Algeria","wpestate"),__(
2 – plugins\wpresidence-core\post-types\property.php
$countries = array(__("Afghanistan","wpestate"),__("Albania","wpestate"),__("Algeria","wpestate"),__(
3 – plugins/wpresidence-core\misc\plugin_help_functions.php