Avatar module is not working on 7.2

I am facing issue with Avatar module. When i try to choose an avatar from available avatars, it just refresh but don't show the selected avatar. I tested it on demo.boonex.com it is working fine there but on my website its not performing the required action.  I removed the module cleared the cache then reinstalled the module, but still no luck. Any one else facing the same issue? Help here plz.

Found this issue on github https://github.com/boonex/dolphin.pro/issues/64

Only thing i found common was Apache webserver, While the demo.boonex.com is on nginx. Is it possible that is causing the problem?

In Dolphin 7.2, Avatar module isn't used by default - instead "Photos" module is used for avatars, so first photo from "Profile photos" album is used for avatars. 

You can change it back to Avatars module here:

Admin panel > Settings > Advanced Settings > Profiles > Member Thumb & Member Thumb Icon