Reply To: The theme became look like mobile version on laptop 13"

Yes, and now style.min.css files is broken. We suggest you to do all your CSS coding in the child theme style.css or in the Custom CSS section in Theme Settings. To update the theme you need download the latest version on ThemeForest -> Downloads. Then just reupload new theme via Appearance -> Themes but install this plugin firstly https://wordpress.org/plugins/easy-theme-and-plugin-upgrades/
Also, we suggest you make a backup of all your files before any update.