A very few webhosts use /admin as a special URL for you to access a
// control panel or something. Unfortunately this conflicts with the
// standard location for the Moodle admin pages. You can work around this
// by renaming the admin directory in your installation, and putting that
// new name here. eg "moodleadmin". This should fix all admin links in Moodle.
// After any change you need to visit your new admin directory
// and purge all caches.
After I've done purge all caches but the admin site still missing, i don't know what to do after I've try anything to get my admin sites back.
// control panel or something. Unfortunately this conflicts with the
// standard location for the Moodle admin pages. You can work around this
// by renaming the admin directory in your installation, and putting that
// new name here. eg "moodleadmin". This should fix all admin links in Moodle.
// After any change you need to visit your new admin directory
// and purge all caches.
After I've done purge all caches but the admin site still missing, i don't know what to do after I've try anything to get my admin sites back.