Since hap ac2 lacks beeper I wanted to use the five frontal leds to show users when it was a problem but If I'm not mistaken there is no option in system/leds to contol them, Will be possible in a new release?

Unfortunately, for this particular device, you can only use "dark mode", there is no possibility to control ether1-ether5 LEDS.
Currently there is no information about future hAP ac² releases.