Tantri Abenk

You can turn off translations for category and tags of post by following this code:

Turn Off Translations for Category

function turn_categoryblog_translation_off( $taxonomies, $is_settings ) {
    unset( $taxonomies['category'] );
    return $taxonomies;
}
add_filter( 'pll_get_taxonomies', 'turn_categoryblog_translation_off', 10, 2 );

Turn Off translations for tag

function turn_tagblog_translation_off( $taxonomies, $is_settings ) {
    unset( $taxonomies['post_tag'] );
    return $taxonomies;
}
add_filter( 'pll_get_taxonomies', 'turn_tagblog_translation_off', 10, 2 );