Hello Themosaurus,
I actually want to just contact someone but since I couldn’t find it on the website i’ll post it here.
I had the elementor activated on installation but I didn’t like it actually. So now I uninstalled it and now my about-us and coming-soon and a lot of other pages don’t work anymore.
Example: 

For me it’s quiet hard to understand how to change the pages in general because when I go to -> Pages within the dashboard itself it seems all empty. Example: 
I do understand you change a lot in the theme customizer but that works only for blogs and the homepage…
Please help?