This option removed from latest version as it caused some issues with servers .. if you want to use it
edit panel/mpanel-ui.php and search for
tie_options(
array( "name" => "Footer Widgets Titles",
"id" => "typography_footer_widgets_title",
"type" => "typography"));
and add this code below it
tie_options(
array( "name" => "H1 Typography",
"id" => "typography_post_h1",
"type" => "typography"));
tie_options(
array( "name" => "H2 Typography",
"id" => "typography_post_h2",
"type" => "typography"));
tie_options(
array( "name" => "H3 Typography",
"id" => "typography_post_h3",
"type" => "typography"));
tie_options(
array( "name" => "H4 Typography",
"id" => "typography_post_h4",
"type" => "typography"));
tie_options(
array( "name" => "H5 Typography",
"id" => "typography_post_h5",
"type" => "typography"));
tie_options(
array( "name" => "H6 Typography",
"id" => "typography_post_h6",
"type" => "typography"));