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”.
Please let me know if that helped you.