Hi Leo,
I found the following solution recently,
You can add this code to GeneratePress function.php
You need to change -34 and -35 according to your category id, that you do not want to show on the front page.
add_filter('pre_get_posts', 'excludeCat');
function excludeCat($query) {
if ( $query->is_home ) {
$query->set('cat', '-34,-35');
}
return $query;
}