We had a deep look into WPML, but unfortuantely it is not possible to use WPML with custom Database Queries (needed to lat / lng <-> distance).
It is possible to translate everything with WPML except the stores data (like name, description).
You can read more about this here: https://wpml.org/forums/topic/display-custom-types-based-on-language-in-a-custom-plugin/
I have set the distance unit to KM however the distance still shows in Miles (data) with the KM’s label. Any ideas?
Where exactly? Can you send us a screenshot?
How can i make the button inside the input searchbox on the search for store page?
Via custom CSS.