Switching sockets http request does not work

[Faneduru]

I have a Lan Controller (HW:1.2 SW:2.59 S/N:6446) which works well but I cannot switch the sockets (http request) like it is written in the documentation. I mean if I write: user:password@192.168.1.100/outs.cgi?Out=2 it just returns the status of the Out sockets (11111) without changing their status. Of course I use the correct user and password and the right IP (and port)...
Is it something to be configured in order to make it work from this point of view?

Thanks in advance!