CSF makes user cannot log through user panel

Port 2082 and 2083 are open in csf.conf and server is whitelisted

[root@xxx ~]# lsof -i :2083
COMMAND  PID   USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
httpd   3952 nobody  157u  IPv4  470156      0t0  TCP localhost:45456->localhost            :radsec (CLOSE_WAIT)
httpd   3952 nobody  162u  IPv4  777864      0t0  TCP localhost:45588->localhost            :radsec (CLOSE_WAIT)
httpd   3952 nobody  163u  IPv4  929547      0t0  TCP localhost:45636->localhost            :radsec (CLOSE_WAIT)
httpd   3952 nobody  164u  IPv4 1023068      0t0  TCP localhost:45730->localhost            :radsec (CLOSE_WAIT)
cwpsrv  4777   root   15u  IPv4  408277      0t0  TCP *:radsec (LISTEN)
cwpsrv  4778   root   15u  IPv4  408277      0t0  TCP *:radsec (LISTEN)
cwpsrv  4780   root   15u  IPv4  408277      0t0  TCP *:radsec (LISTEN)

After logging user is pushed back to login page but if I flush th iptables rules through csf -f then user get logged and it works fine.

Any suggestion to fix it?

Thanks