HotSpot error

Hi,
i have HotSpot on MT RouterOS 2.9.7( folow manual on wiki).

Problem is:

User can not get login page.(Error 404:Not Found ina Firefox) an can not surf
When I add user's mac address in IP Bindings
[SGuser-R02@SkyGate-R02] ip hotspot ip-binding> print
Flags: X - disabled, P - bypassed, B - blocked

MAC-ADDRESS ADDRESS TO-ADDRESS SERVER

0 P 00:30:4F:34:33:C5
this user can surf.

Pleas help

Please, upgrade your router to 2.9.50 version,
http://wiki.mikrotik.com/wiki/Upgrading_RouterOS