RoiuterOS with Radius ACS

Hi All

I Use Cisco WLC for Wireless and SSID gateway is RouterOS. Client can join ssid and pop broswer for web authentication.
But after client input their username and password, the web show " raduis is not responding".

I have created RouterOS config and secret in ACS Network Devices and AAA Clients. and allow chap (v1 v2)and pap
And Router I have Radius config ,enable hostspot and create hotspot server and profile
I use pap for authentication and use radius and accounting ,
So do I lost other settungs ?

Thanks for everyone