@Danking
So I saw @Chafik 's response below and decided to look further in my modem settings... try the following:
Log into your modem (192.168.2.1) and click on "manage my wi-fi". Then in the new popup window top right you'll see "Whole Home Wi-fi, Let Valérie optimize Wi-Fi throughout your home " click on the toggle to turn it off. after that you'll see 2.4 & 5.0 both show, and below that you'll see the button for "advanced settings"
Now, you can set 2.4, 5.0 and guest separately with individual names, and also turn off the broadcast SSID (what i mainly wanted)
UNFORTUNATELY... still no Internet Access Manager... and the little display on my modem still has the stupid "New device connected" message.
But hey, at least we can manage our wi-fi lol