myMoodle present the courses in no alphabetical order en myMoodle. The changes to do:

line 68 in my/index.php

$courses = get_my_courses($USER->id, null, '*', false, 21);

must to be changed for

$courses = get_my_courses($USER->id, 'visible DESC,sortorder ASC', '*', false, 21);

Thanks to Iñaki Arenaza