New Widget Area Missing Functionality

I love generate press, but with the latest updates the widget area has become less intuitive and lost lots of features in my mind. I have a stickied side bar on this site (https://simplifysheets.com/basics/data-validation) Note my support section stays with the user as they scroll. This was done with the fixed widget plugin (https://wordpress.org/plugins/q2w3-fixed-widget/). Now though, my site shows that all my widgets are legacy and I can't edit them anymore without starting over. And simple features like check a box to make a widget element fixed are now lost.
I have screenshots, but is there a way to go back to the "legacy" version which has far more functionality and is far more intuitive?
I can't even select the whole widget area to use an html anchor id, very disappointed with these changes to generate press.