Not able to edit certain blank fields.(screenshot attached)

Hello,

I'm Not able to edit certain blank fields.{screenshot attached}

I'm using pivot theme with beaver builder. I want to add text/widget/form etc at these empty places by it's not giving me an option to do so. The only options which I can see as of now are to duplicate/delete/move or edit the box(field) properties but none where I can actually write text, add a widget or a form.

This is the homepage, but I'm facing a similar issue in other pages as well.

Your help would be much much appreciated.

Thanks in advance. :)

Screenshot link: https://pasteboard.co/I9MLq5W.png