tours review section on home page

tours reviews section on home page is not working i added the comment id or the review id to the section but it doesnt show any info … only show the background

also
i want to change the tours in links to treks
the url of all pages has changed. it should be trek not tour.
for example http://naturewalkers.in/tours/nishanimotte-trek/
we need it to be http://naturewalkers.in/treks/nishanimotte-trek/