I do not want childrens use of Sonos to count in overall 'usage' during the day ... is it possible to exclude Sonos from hours of usage in the Deco M9 control filters?

On my Samsung tv - when choosing a network - only the Deco's 5ghz is visible even though 2.4 AND 5 are set on the Deco? Also on my iPhone I kan only choose one SSID, not two. I used to have two channe

The M9 is my main. Allso I have 4 M5's (4 floors in the house). It works fine but could the speed and coverage be better if I changed the M9 (and placed it elsewhere) for a 'stronger/bigger' main Deco

Measuring internet speed (cabled) with the deco app gives me around 500 mbps. Measuring wireless speed just 25 cm from the first deco (attached to my router) gives me around 180 mbps. Is this the norm