Hide SSID on Orbi RBR350, is it possible?

Hello

I am using an ORBI 353 (Wifi 6, bi-band, 1 base, 2 satellites).

Problem = system does not allow to hide SSID.

I've seen on other community messages, that option should be found in Advanced Wireless Settings -> "Enable SSID broadcast" in front of each frequency listed.

Trouble is, such an option does not exist on Orbi config pages... I therefore can't hide SSID.

I'm using firmware:

V4.3.4.7_1.9.53 for RBR350 (the base)

V4.3.4.7 for the two RBS350 (the satellites)

Their status says "No new firmware version available.".

I write this on 2021-02-17.

I've tried both Router and AP mode (I didn't expect SSID hiding to be linked whatsoever to this parameter, nevertheless I found it worth giving it a try...) -> same situation, option to hide SSID does not exist in Orbi config, whatever the mode is.

Anything that I'm missing, that'd allow to hide SSID?

Thanks for help,

Regards