Astra Advance Header Title Tag

// Page Header Title Tag
add_filter( 'astra_advanced_header_layout_1_title_tag', 'change_title_tag', 10, 1 );
add_filter( 'astra_advanced_header_layout_2_title_tag', 'change_title_tag', 10, 1 );

function change_title_tag( $tag ) {

    $tag = 'YOUR TAG HERE (can be H2, H3 etc)';

    return $tag;
}