previous and Next button not working

Hello Arafat,

I’ve checked you website and I saw that you have some js. errors, as you can see in this screenshot: http://screencast.com/t/PW513zL8Hvy It seems to be an error caused by conflicting plugins. Please try to disable all the active plugins, except Visual Composer, clear all your caches and install only the plugins that come bundled with our theme and rule out the possibility to be plugins in conflict and try again.

Hope this helps and let us know how it goes!

Thank you for the message!