[Theme Horse Support Team]

Hi Konrad,

Sorry for late reply. We have researched about it. Yes there is some Google font issue in the theme. We will update it in upcoming version.
For now just Go to theme directory -> inc -> functions -> functions.php on line no. 67

You will find the below code:
wp_register_style( 'interface_google_font', '//fonts.googleapis.com/css?family='.$interface_google_font_load .':400,700italic,700,400italic');

replace above with below code:
wp_register_style( 'interface_google_font', '//fonts.googleapis.com/css?family='.$interface_google_font_load .':400,700italic,700,400italic&subset=latin,cyrillic-ext,latin-ext');

Thanks for reporting the issue.