[USG FLEX H AP Controller] Why I cannot find the hidden SSID option in FLEX H controller

Zyxel_HsinBo

The Hidden SSID setting is supported for APs managed by the FLEX H controller starting from uOS version v1.36.
If your controller is running an earlier version, the option will not appear in the SSID configuration menu.

To enable this feature, please upgrade the FLEX H system (and the managed APs) to uOS v1.36 or later.