Remove sidebar from lp-profile | WordPress.org

Hello,

I would like to remove the sidebar from the lp-profile page, but keep it on the other pages. For this I installed content-aware-sidebars and created a sidebar without anything. However, the sidebar still occupies space on the page rather than that the lp-profile can use the full screen. I use twenty seventeen as theme. Which should work as I read here: https://dev.institute/blog/remove-hide-sidebar-wordpress-page/

What do I need to do to make it work like explained there?

Can I add something to the php? I copied the file sidebar.php as child theme to /domains/website/private_html/wp-content/themes/twentyseventeen/content-aware-sidebars. What could I add here or to another php or somewhere a CSS code?

Thanks for your help. 

Best,

Anne