Users are unable to signup for a site on my wpmultisite install

Heya,

When I try to click on register, it takes me to http://bestreviewsites.co/wp-signup.php which says page can not be displayed

however another domain on the same hosting space with the same dns settings does work find

http://freewebsitedesigning.in/wp-signup.php

Can someone please advise what might be going on ?

Currently I am using wp 3.22 on both of the installs and they are installed like /freewebsitedesigningindia/

and /bestreviewsites/ respectively.

Cheers
PC