Sort event reccurence problem

i setup for one event custom reccurence with date:
28.02
06.03
13.03
20.03
27.03
with my query:

$per_page = 40;
$paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
$events_count = $events = eo_get_events(array(
    'event_end_after'=>'now',
    'event-category'=>$wp_query->query_vars['event-category'],
   	'posts_per_page' => -1,
   	'paged' => $paged,
	'group_events_by' => 'series',
//    'numberposts' => -1
));
$events = eo_get_events(array(
    'event_end_after'=>'now',
    'event-category'=>$wp_query->query_vars['event-category'],
   	'posts_per_page' => $per_page,
   	'paged' => $paged,
	'group_events_by' => 'series',
//    'numberposts' => -1
));

result is:
13.03

but i want to be 28.02 , where is wrong ?

https://www.ads-software.com/plugins/event-organiser/