<span class="Y2IQFc" lang="en">It looks like I created a patch for some of your users.
After having had a rather similar problem (modal which is not displayed when a point of the map is clicked for the users not connected in admin), I saw an error 400 of the ajax request "mapp_get_post". It made me think of a missing no_priv for the requested query. So adding the following line in the code, it worked for me: add_action ('wp_ajax_nopriv_mapp_get_post', array (__ CLASS__, 'ajax_get_post'));
This code goes L 53, in mappress_map.php
Regards, :)</span>
