EMLH does not work in admin side.
It is designed for the convenience.
If you want to enable EMLH even in admin area, edit here.
line 40 in easiestml.php
// Target check
if( ! preg_match( '?'.preg_quote(XOOPS_ROOT_PATH,'?').'(/modules/[^\/]+/admin/|/common/|/modules/system/|/admin\.php)?' , $_SERVER['SCRIPT_FILENAME'] ) ) {
Edit the preg pattern as you like.