Coming to the topic,
Here there are two ways to get Reply button in comments of facebook posts. One is by using two chrome extensions and another one is by using Inspect element in chrome facebook page.
But I`m showing you by using two chrome extensions method because it is much easy compared to chrome inspect element method.
Steps to get Reply Button in Comments for Facebook Profile Posts :
Step 1: Make sure that you are having the latest version of Google Chrome.
Step 2: Install the two below extensions on your chrome browser,
a) Manual Geolocation – Click Here to install this one.
b) Ultimate User Agent Switcher – Click Here to install this one.
Step 3: After installing both of them, click on Manual Geolocation extension icon near chrome menu.
Click on ‘enable’ link and Search as New Zealand. If you see the link as ‘disable’ then, it is already enabled for action, you just need to search for the location.