Hi,

Open yout theme functions.php file and add following filter:

add_filter('stec_insert_post', function($data){

    $data['meta_input']['icon_type'] = 'date';
    return $data;
});

Now when you save/update your events the icon type always will be set to "date" regardless of the admin setting.

You can place it in your child theme.

Remove the previous code I've sent you earlier and place this one instead:

add_filter('stec_event_get_front_data', function($data) {
    $data['icon_type'] = 'date';
    return $data;
});