Responsive Editing Issues

Someone please help!

I have read articles, watched youtube videos, you name it. They all show people editing their mobile version in the responsive editing mode on Beaver Builder.

No matter what I do I can’t seem to get it to work for me. Any changes I make in the smaller formats seem to still affect my desktop layout. There is probably one tiny thing that I’m missing but I cannot figure it out to save my life and I’m about to lose my mind!