Disable mega Menu

Hi,

I wanted to disable header footer and mega menu module.

I tried to disable both and hit the save changes button. But when I refresh the page both gets activated again.

Then I tried to de-activate header footer only and it worked.

Then again, I tried to de-activate mega menu, both modules gets activated again.

I want to de-activate mega menu because it is causing problem in menus page. Alert message pop ups saying “Changes you made may not be saved.” even if I had no changes or when I hit save change button. Its irritating.

Thanks.