Hello, @Alex!
We need more information…
-What theme version and Elementor Page builder plugin do you use?
-Have you tried to disable All the plugins to find if there is some conflict?
Anyway… I found that there are some changes in the latest update of the Elementor plugin (v 2.5.16). which could cause a compatibility problem with our theme. We will try to find the problem as soon as possible, and if the problem is in the theme, we will release a bug-fix release in the shortest possible time.
For now, try to replace Page templates on pages you can not edit, to “Elementor Full Width”.
https://prnt.sc/nwuzuo
Please let me know if that helped you.
Regards