Hello Parth Lawate,
I am really sorry for the delay of this reply as it is a weekend for us here.
Actually that was known issues, if you have Admin Tools installed, you have to add this restriction for "com_easyblog" in WAF configuration in Admin Tool.
To fix this, go to your backend > Access admin tools > Click on Web Application Firewall > click on Configure WAF > Click NEW > add "com_easyblog" ->
http://screencast.com/t/Vrr7JToA2ml
By the way, I've checked in your site, it seems like your Admin Tool do not have "WAF configuration", can you consult with Admin Tool developer regarding this?