UserManager issue

I use hotspot and DHCP server to give auto IP
when i open any page login page ask me to enter my username and password and everything works fine.
I installed UserManager and follow all steps as descripe in Wiki pages but the problem when i try to open userman page its show not found .
But if i disable HotSpot ,The userman page works fine

Whree is the problem here?

Change ip service www port to something other than 80, e.g 808

/ ip service
set www port=808 address=0.0.0.0/0 disabled=no

Now access usermanager at router-ipaddress:808/userman

Thank you
Its working now