Hi William,
I am sorry for the delay of this reply.
Regarding your issue, can you edit the file 'JOOMLA/administrator/components/com_easysocial/includes/advancedsearch/helpers/user.php' and go to line 297:
$query .= ' order by a.`ordering`';
and replace the above code with following:
$query .= ' order by fs.`sequence`, a.`ordering`';
Let me know if the above fix your fields ordering issue in advanced search page.
Hope this help and have a nice day