idmdoodles,
I think you can do that with filters described in the documentation. Many of labels has an identifier like this: epl_button_label_floorplan (label of button Floorplan) or epl_search_widget_label_property_id (label of property id in search widget).
To change it, you can add a function as follows:
function my_epl_search_widget_label_property_id() {
$search_label = 'My Custom Label';
return $search_label;
}
add_filter( 'epl_search_widget_label_property_id' , 'my_epl_search_widget_label_property_id' );
I’m not sure where are trying to do the modification, but I think you can find what you want in one of following articles:
https://codex.easypropertylistings.com.au/article/149-eplsearchwidgetlabelpropertyid
https://codex.easypropertylistings.com.au/article/112-modify-admin-labels-of-each-listing-post-type
https://codex.easypropertylistings.com.au/article/206-editing-meta-field-labels-and-attributes-on-new-edit-listing-page
Good luck!
Marco Andrei