Logging out after changes

[#1]

I am having a problem with settings changing after a few minutes, on the Sagemcom router. I set up an IP camera, set up port forwarding and open the firewall to the the camera. I test the connections and all is working well. However, after a few minutes the camera is not reachable and I am unable to access it remotely. I open port forwarding again, click edit, I change nothing I then click apply and the camera can be accessed again. I'm wondering if its because there doesn't seem to be log out link which should be clicked.
Any ideas please?

[#2]

Hi peterpi,
the router should be saving your settings.
Please try a <a href="http://www.plus.net/support/broadband/hardware/plusnet-2704n-faqs.shtml#factoryReset">factory reset</a> before trying this again. 
Let us know how you get on.