Catch Box – Content width in Full Width, Disable Sidebar mode

I know similar issues have been raised before, and solved, but the solutions I’ve seen so far do not work in my case, or at least I wasn’t able to get them to…

My problem is the following:

For Pages, there appears to be no difference between the “Disable Sidebar” and the “Full Width Disable Sidebar” templates.

I’d like to disable the sidebar and have the content of my page fill the free space – I thought this was the idea of “Full Width Disable Sidebar” – however, it does not work.

On https://marcsandreu.com/ the “Home” page uses the “Full Width Disable Sidebar” template, and the “Marcs” pages uses “Disable Sidebar”. However, they format the same.

I am using the latest version of Catch Box.

Any suggestions for how to achieve what I would like?

Thanks!