Posts do not showed on website on PC | Flash theme

Hi!
Again I have the problem of displaying posts on website on PC. This time it is concerned only English version. After adding new posts to the blog page and checking them today in the morning I’ve received such a message “Nothing Found
It seems we can’t find what you’re looking for. Perhaps searching can help.” https://prnt.sc/r4h9fe
Even when I just push the blog section on the top menu of the website I get “Nothing Found Ready to publish your first post? Get started here.” https://prnt.sc/r4hajx

When the same problem has been the first time I’ve solved it by backup of the site.

Is it just the one way to solve the problem?

The page I need help with: [log in to see the link]