category does not list posts from that category

Hi, I need help.

My site is multilangual, Serbian as default and the second language is English. I have 20 articles, and one category called blog. I set up a blog in the main menu and the Serbian version lists all the articles, but the English version gives 404 Page not found. Individual article wants to open, like this: https://www.relaxkutak.rs/en/blog-en/new-in-the-salon-royal-body-firming/

The link is: https://www.relaxkutak.rs/en/blog-en/

Can anyone help me with this? Thank you!

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