I have been trying to translate the Appointments + plugin,

I have been trying to translate the Appointments + plugin, but aside from getting a .POT file which I am not very used to dealing with, some of things that we see on the front-end are not available to be translated in the only language file I found.

Also I tried to translate the template Business Feature and even though I found and translated the sentence "Search our site" through Poedit which appears in the home page it still remains as English there. Do you have any idea how I can go about it?

Cheers
Thiago