Hello @burkiburak,
Please give further clarifications as to what you are trying to do here. First, I have checked your “All roads lead to Rome” post and it is created by “Max Krahé”:
I also checked the Multi-Author on this post and I see this:
On the page “Autoren_multitag”, you have a looper with this as the provider:
Now, I was wondering what you want to display on the “Autoren_multitag”. Are you trying to display post items that were created or that Max Krahé is the Multi-Author? If that is the case, you will need to use Looper Query String instead of having this argument:
$meta_query[] = array(
array(
'key' => 'multiautor',
'value' => 'Max Krahé',
'compare' => 'IN'
)
);
$query = array(
'post_type' => 'post',
'post_status' => 'publish',
'order' => 'DESC',
'orderby' => 'date',
'posts_per_page' => -1,
'meta_query' => $meta_query
);
Kindly check out this thread to know how to get the correct Looper Provider Query String:
Best Regards.