I can't enable Security on Belkin N1 Model FSD8231-4 ver5000

[BelkinSlob]

It used to work. Might be Windows 7 upgrade, but not sure it is that.
I go to the Belkin webpage on my client, 192.168.2.1/home.htm
and I can get to Security page and enter all the correct choices and passkey and I click on "Apply Changes" and it waits and grinds and then shows the same page with all the info minus the passkey. Re-opening the webpage shows Security = Disabled.
iPhone and Roku and Netflix don't ask for passkey, but show WIFI network choice.
WIFI works, just no security.
Tried rebooting modem.
Tried turning off and on.

Does anyone have any ideas at all?
Can I make a whole new network choice?

 

[RealBeast]

You may need to reset your router, and if available apply the latest firmware if you have not already done that. It is not wise to run wireless without security, as others can use it and access your network.