Hi sonamanish,
You can disable by doing one more step:
+ Go the this file: ig-pagebuilder\ig-pagebuilder\assets\3rd-party\bootstrap3\css\bootstrap.min.css
+ Delete all block with "@media (min-width: 992px)"
+ Save and retry.
But we do not recommend doing this step because it can make PageBuilder has display problem.
InnoGears Support Team.