Only harmattan is supported atm.
Ofcourse it will not work. Such links assume that user have warehouse installed. [...] The purpose is to use inside apps/sites, qrcodes for cross-linking between applications from developers.
I.e. use "openrepos://app/XXXX/rate" in your app with title 'Rate my Application' ,or ''openrepos://app/XXXX/install" with title "Install this companion application for Pebble, if you want to support 4sq checkins!" Or issue ''openrepos://app/XXXX/update" for self update, if your application sure that update is available, and shows own update details.