Sendy on Nginx

HI, I am trying to install sendy on ubuntu 12.04 . My issue is exactly the same as mentioned here: https://sendy.co/forum/discussion/1287/redirect-loop-upon-clicking-the-install-button/p1. Here is the server compatibility:

 Server configuration:
 Your PHP version is 5.3.10-1ubuntu3.11
 mysqli extension is installed
 mod_rewrite is not enabled
 display_errors is turned off
 hash is enabled
 curl is enabled
 gettext is enabled
 curl_exec is enabled
 curl_multi_exec is enabled

 Score: 8/9

I have tried everything but couldn't figure this out. Do you have any clue about this. Thanks. Siddhant