Reply To: Sidebar on sub category pages not parent categories?

Hello,

You can try custom CSS. Have a look at the screen of a category page http://prntscr.com/jzkvnt Each of them has its unique class. So you can try this code replacing the category class

.term-cooking > .shop-content-area{
   width:100%;
   min-width:100%;
   left:0!important;
}
.term-cooking.sidebar-container,
.term-cooking.sidebar-left{
   display:none;
}

Add the code to Theme Settings > Custom CSS.

Best Regards