@schillkroete Yes, if you can't see M5 in WiFi analyzer, that would explain why devices won't connect to it. If you want to, you could give it one last try and see if you can install firmware 1.6...

@schillkroete Take your smartphone to where you M5 is, and stay close to M5. Turn off and on WiFi on smartphone or just restart it. After that. In WiFi Analyzer, open "Wireless" screen from the icon...

@schillkroete Right. This sometimes happen with old firmware, instead of useful information it just says something like "Deco is functioning OK' and it'll keep saying that until you have device...

@schillkroete In Deco app, on that screen that you copied to reply, touch Deco icon named Dr and new screen will open with Signal Source information in it. Please copy it to your reply. Example: WiFi...

@schillkroete If Deco M5 is connected to Ethernet, please disconnect it from Ethernet cable so that it will use WiFi connection to your Deco mesh. Then, please clarify the following for me. 1. LED on...

@Marcus1 See Post #8 from the following conversation: X5700 LAN IP Address restricted