hello,
i have configure my routerOs as Radius client for hotspot user. but when client try to authenticate, i have message " trying to login by http-pap, failed, radius is not responding"
there is not problem about network connectivity and some parameter as shared secret,NAS port type , ip of radius server are well configured.

i don't know what's wrong
please what can be possible cause of that?

thanks in advanced

If you can ping the radius server from the MT router, then the usual reason is incorrect setup in the radius server "clients.conf" file.

You are sure all is set correctly in the MT router "/radius" settings?