@TP-Link When I am using the Deco app, the app tells me that the Decos are already updated with the lates software. This is not correct...? I do believe I can trust the app, when it says everything...

Dear Deco Community, I cannot change security setting on my Deco network. My Deco M9 units are all updated, and my app (IOS) is also updated. How do I change security setting? Under "WiFi" I can only...