R6350 How to completely disable WPS?

Hi guys

I want to completely disable WPS on my Netgear R6350 router(1.1.0.76). Since there is no single option to check/uncheck to disable WPS i did the following:

- I've unchecked "enable routers pin" in advenced setup/wireless settings.

- I've unchecked "enable SSID Broadcast" in both 2.4 and 5GHz main networks and in both 2.4 and 5GHz guest networks.

That is all I can do to disable WPS on this router right?

I've assumed that it was done. WPS wizard button in advanced settings was greyed out (like it should be) until I opened guest network settings... when i'm in guest network settings this "WPS Wizard" button is not greyed out and I can click it and WPS Wizard page opens... Is that normal behavior? Or maybe a bug in the firmware? Or maybe something else? Is WPS disabled after the steps I have mentioned above?

Thank you in advance for your help