GeneratePress Theme Site Library Problem

Hello Guys, I have a big problem! I’ll try to describe it briefly.

I installed the theme – Generate Press. I had a site and everything was ok. But I wanted to install one of the themes that comes with . Just in case, I made a subdomain ( mydomain.com/subdomain/ ) and then looked at different themes. Everything worked fine.

As soon as I installed the theme on my main site – mydomain.com, everything immediately “removed imported site”, shifted and all sorts of things are happening.

The problem is that in the Elements section there are elements that are installed with the theme, but they are not displayed (see screenshot). https://ibb.co/bRgY4J8H

I click Attempt recovery and still nothing happens.

I deleted the theme and installed another one, the same thing.

I cleared the cache on the site (W3), disabled all plugins, the problem still remains.

What else can I do? What could be the reason?

Thank you