@Joseph-TP I manage 4 deco networks of which 3 are behaving fine. The fourth network is the biggest and is causing problems: # 7x deco P9 first generation units, 5 are connected by ethernet in series...

@DiceKey yes I've done a hard reset on all the decos. Now I'm unplugging theethernet to see if does anything. I mange two other Deco P9 networks and they seemed be working fine.

@DiceKey ive reset my network completely and that's not helped. The App still shows all P9's offline when they are actually functioning. I'm wondering if the App's at fault...

@DiceKey I've completely reset moneywort taking alldecosbsck to factor settings and still have the same problem.

@DiceKey my P9's also just became unstable. I have 8 units, with 6 connected with Ethernet cable and 2 free standing. They flash red randomly. The Deco App on an iPhone is also pretty useless telling...