Firstly I am not sure the hardware version is correct as I can't find it anywhere.

My problem is I have 5 decos and randomly in the app some or all but the master will report as offline but the green light remains on the decos, sometimes the offline decos still have clients attached that are functioning, sometimes a reboot will fix it sometimes not, even power cycling doesn't appear to fix it most of the time.

Occasionally I will see several clients attached to the master deco and then a list attached to deco unknown.

This is system was working perfectly up until recently

Yesterday I factory reset the whole system and rebuilt it, at the time it was fine but 3 hours later the problem had returned.

I am using the system in WiFi router mode with beamforming enabled fast roaming turned off.

Pls advise